申請人鍍鋅產品手冊 - webfile.customs.gov.tw ·...

附件 8

申請人鍍鋅產品手冊

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中鋼公司等申請人申請人鍍鋅產品手冊鍍面鋼品附件8

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中鋼集團總部大樓

中鋼公司品質政策

以客戶導向為基礎 ,持續研發創新 ,

提供優質環保產品 ,善盡社會責任。


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4 55

品質。技術。服務

連續熱浸鍍鋅線 – 中段

產品手冊

1 1.公司簡介

2 2.產品及服務特色

3 3.新產品介紹 (推薦鋼種 )

5 4.驗證證書

7 5.生產流程及主要設備說明

11 6.最終用途例

12 7.規格資料

12 7.1化學成分及機械性質

23 7.2許可差

29 7.3鍍鋅產品品級區分

30 8.產製範圍

31 9.標記與包裝

32 10.客戶使用注意事項

34 11.單位轉換表

37 12.主要規格對照

38 13.訂貨需註明事項


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廠區綠化

公司簡介

中國鋼鐵股份有限公司(中鋼)位於高雄市，

成立於民國 60年 12月，目前粗鋼年產能

約一千萬公噸，主要產品為鋼板、條鋼、線

材、熱軋、冷軋、電鍍鋅鋼捲、電磁鋼捲及

熱浸鍍鋅鋼捲等鋼品，以及鈦基 /鎳基合金。

產品約 65%內銷，35%外銷，國內市佔率

逾百分之五十，為目前國內最大鋼鐵公司；

外銷主要對象為中國大陸、日本、東南亞。

中鋼是一個勇於創新、執行力強的公司，以

「追求成長，持續節能環保及價值創新，成

為值得信賴的全球卓越鋼鐵企業」為願景，

積極落實「團隊、企業、踏實、求新」四大

精神，以及「增進社會福祉、落實實際績效、

發揮群體力量、講求人性管理」四大經營理

念，除持續深耕鋼鐵本業外，亦致力協助下

游相關產業升級，提昇整體產業國際競爭力。


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中鋼公司為一貫作業鋼廠，民國 71年 6月 30

日第二階段擴建工程竣工後，開始生產冷軋產

品，其後歷經第三、四階段擴建，產品形態包括

冷軋鋼捲、電磁鋼捲、電鍍鋅鋼捲、熱浸鍍鋅鋼

捲及彩色鋼捲，本產品手冊介紹鍍鋅產品，包含

熱浸鍍鋅鋼捲及電鍍鋅鋼捲。

中鋼鍍鋅產品經過長時間不斷開發與精進，產品

已漸趨多樣化，可提供各種加工用途的鍍鋅產

品，例如熱浸鍍鋅一般成形及高強度成形用鋼、

熱浸鍍鋅高強度雙相鋼、高導電耐指紋皮膜用

鋼、單面鍍鋅塗油產品⋯等，可充分滿足產業需

求。

中鋼鍍鋅產品經過從煉鋼、軋鋼至出貨的一貫化

品質管理，內外品質、尺寸精度及加工性均相當

優異。鍍鋅鋼捲具有超平滑表面，可以直接外露

使用，且由於採用二道脫脂設備及全輻射管加熱

方式，並透過嚴密監控加熱爐氣氛，穩定控制鍍

鋅量，因此具有優異的鋅層附著性及耐蝕性。此

外，並提供完全符合無毒害之有機或無機後處理

皮膜，為具備耐蝕、潤滑、銲接或上漆性組合之

產品。

產品及服務特色

中鋼鍍鋅產品通過各項相關驗證，諸如 ISO

9001、ISO/TS16949、JIS MARK 及 IECQ

QC080000（有害物質過程管理系統）等驗

證，可符合 RoHS（Restriction of Hazardous

Substances Directive；危害物質限制指令）及

REACH（Registration, Evaluation, Authorisation

and Restriction of Chemical substances；化學

物質登記、評估、授權和管制法指令）之規定，

並通過知名車廠的高強度等級產品驗證，品質精

良足以信賴，客戶可以安心使用。

中鋼客戶服務，以「贏得客戶感激和信賴，協助

客戶成功」為願景，並以「協助客戶提升技術，

促進鋼鐵產業升級」為宗旨。為加強對客戶的服

務，採多階段、多層次的客戶技術服務模式，主

要特色包含：1.強調售前服務，協助客戶適切用

料和改善加工製程。2.迅速且合理處理客戶抱

怨，並代表客戶推動改善。3.配合產業升級，研

發提供所需之高級鋼品。國內業界普遍肯定中鋼

產品品質穩定可靠，且技術服務快速有效，被列

為購料優先選擇對象。中鋼將持續精進客我技術

能力，以增進鋼鐵製品各產業之國際競爭力。


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高導電耐指紋皮膜鍍鋅用鋼

(電鍍鋅 -EG/熱浸鍍鋅 -CG)本產品具有優良導電性之效能，適用於電腦機殼等 3C產業之零組件，適合需抗電磁波干擾

(EMI)及抗靜電要求之使用環境。

GA潤滑皮膜處理用鋼

本產品為GA汽車用鋼搭配塗覆高潤滑性之化成處理皮膜，可大幅提昇材料衝壓性與模具壽

命，避免衝壓破裂與降低零件損壞機率。

熱浸鍍鋅高強度成形用鋼

(EN HX260YD/HX300YD、JFS JAC390P)

本產品具有高強度、優異的衝壓成形性等特性，為適合使用於汽車鈑金、零組件等高成形性

需求之用途。

新產品介紹

推薦鋼種


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熱浸鍍鋅高強度微合金鋼

(EN HX380LAD/HX420LAD/HX460LAD、JFS JAC590R)本產品具有高強度與低銲接碳當量特性，適合使用於汽車結構及零組件等，可滿足輕量化需求之

用途。

熱浸鍍鋅高強度雙相鋼

(EN HCT780X/HCT980X、JFS JAC780Y/JAC980Y)本產品含有以肥粒鐵為主與部份麻田散鐵之雙相組織，具有超高強度與低銲接碳當量特性，適合

使用於汽車結構及零組件等，可滿足車體結構件輕量化及高安全性需求之用途。

單面電鍍鋅塗油產品

本產品開發係因應機車油箱製作時，單面之鍍鋅面位於油箱內側具有良好之防蝕性，而單面之冷

軋面具優良外觀與銲接特性，可提昇自動輪銲效率與品質需求，以避免銲接過程銲頭與鍍鋅層產

生合金化，減低銲接強度與銲頭壽命。


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驗證證書

ISO 9001 證書 ISO/TS 16949證書


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IECQ證書 JIS MARK 07008證書


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生產流程及主要設備說明

ConsumableAnode RadialOneSideElectroplatingLine

中鋼電鍍槽採用美鋼公司 (UEC) 的專利設計(CAROSEL、可溶性陽極 )。為利用電化學反應將鋅原子一層層鍍覆於底材鋼片，形成表面均勻性佳之鍍層。

產線設計特色為規劃兩組電鍍槽分別進行鋼捲上 /下表面電鍍，因此可生產單面電鍍鋅鋼捲。

電鍍鋅區CAROSEL型式電鍍槽 CAROSEL型式鍍槽

利用輥塗式後處理設備，可彈性使用

多種的後處理藥劑，其皮膜厚度控制

性佳。

塗覆區

藉由 ASIS系統輔助檢測，具有下列優點：(1)全面性連續性自動偵測

→可大幅提升缺陷檢出能力。

(2)即時回饋鋼捲產出品質→可強化當線缺陷改善能力。

(3)可回溯並統計鋼捲缺陷資料→利於缺陷調查與追蹤。

ASIS-自動表面缺陷檢測系統 (EGL/CGL)

電氣鍍鋅線 -EGL生產流程圖

銲接 (Zn)

鍍層重量計

消耗性的

陽極

輻射狀

單一

面

電鍍

產線

銲接機


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採全輻射式加熱之垂直退火爐，鋼帶經清洗

完後進入連續退火區，藉由調整不同的退火

溫度及時間，使冷軋後的鋼帶產生再結晶，

並消除殘留內應力，可改善機性；此外，退

火爐內通入保護性氣體當作爐氛，以減少氧

化皮膜，可改善鍍鋅表面品質與鍍鋅後鋅層

之附著性。

連續退火區

用以消除鋼料降伏點，並賦予鋼帶表面所需

之粗糙度，使鋅層表面緻密及改善平坦度。

調質 /整平軋延區

利用輥塗式後處理設備，可彈性使用多種的

後處理藥劑，其皮膜厚度控制性佳。

塗覆區鍍鋅區GA合金化感應加熱器

退火後的鋼帶接著進入連續式熱浸鍍鋅產線

的製程核心 -鍍鋅區，鋅槽中裝盛高溫熔融鋅液 (約 460℃ )，槽體內襯採用陶瓷及感應加熱，容積大溫控穩定，並定期分析鋅浴

成分及撈渣，管制鍍鋅液成分及減少缺陷。

採用高頻感應式加

熱器，有利於合金

化效果及均勻性。

熱浸鍍鋅線 -CGL生產流程圖

第一熱浸鍍鋅線

銲接


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最終用途例汽車

衛星天線盤及配件

輕鋼架

彩色鋼片 (廠房外牆及屋頂浪板 )

家具及辦公器具

彩色鋼片 (屋頂 )

滑軌

液晶電視背板

廚具及家電外殼


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規格資料

7.1化學成分及機械性質

7.1.1 熱浸鍍鋅

(1)CNS 1244 化學成分表

註：除 SGCD1~SGCD4外，表中各種類之硼 (B)元素含量須＜ 0.0008%。

註：上表種類符號之彎曲角度需為 1800。

種類符號 C Mn P S

SGCC 0.15以下 0.80以下 0.05以下 0.05以下

SGCD1 0.06以下 0.50以下 0.04以下 0.04以下

SGCD2 0.02以下 0.40以下 0.03以下 0.03以下

SGCD3 0.02以下 0.40以下 0.03以下 0.03以下

SGCD4 0.02以下 0.40以下 0.03以下 0.03以下

SGC340 0.25以下 1.70以下 0.20以下 0.05以下

SGC400 0.25以下 1.70以下 0.20以下 0.05以下

SGC440 0.25以下 2.00以下 0.20以下 0.05以下

SGC490 0.30以下 2.00以下 0.20以下 0.05以下

SGC490M 0.30以下 2.00以下 0.20以下 0.05以下

種類符號

彎曲之內側間隔 (為試片標稱厚度之倍數 )

標稱厚度 (t) mm

t＜ 1.6 1.6≦ t＜ 3.0 3.0≦ t

附著量符號附著量符號附著量符號

Z27以下

Z35Z37

Z45Z60

Z27以下

Z35Z37

Z45Z60

Z27以下

Z35Z37

Z45Z60

SGCC 1 1 2 1 2 2 2 2 2

SGCD1 1 ─ ─ 1 ─ ─

─ ─ ─SGCD2

0(密貼) ─ ─

0(密貼) ─ ─SGCD3

SGCD4

SGC340 1 1 2 1 1 2 2 2 3

SGC400 2 2 2 2 2 2 3 3 3

SGC440

3 3 3 3 3 3 3 3 3SGC490

SGC490M

化學成分表

彎曲性

單位：wt %

本規格資料中，若屬標準規格，內容以各協會公告之最新版本為準；若屬中鋼規格，本公司保留變更內容之權利。


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註：1. (*)表示 SGCD 4鋼捲於生產後六個月內，加工時不得有伸張應變痕之缺陷發生。

　　2. 括號內之數值供參考。

　　3. 1N/mm2=1MPa。

種類符號

降伏點或

降伏強度N/mm2

抗拉強度

N/mm2

伸長率 %

試片及方向

標稱厚度 (t) mm

0.25≦t＜0.40

0.40≦t＜0.60

0.60≦t＜ 1.0

1.0≦t＜ 1.6

1.6≦t＜ 2.5 2.5≦ t

SGCC (205以上 ) (270以上） ─ ─ ─ ─ ─ ─

No.5平行軋延方向

SGCD1 ─ 270以上 ─ 34以上 36以上 37以上 38以上 ─

SGCD2 ─ 270以上 ─ 36以上 38以上 39以上 40以上 ─

SGCD3 ─ 270以上 ─ 38以上 40以上 41以上 42以上 ─

SGCD4(*) ─ 270以上 ─ 40以上 42以上 43以上 44以上 ─

SGC340 245以上 340以上 20以上 20以上 20以上 20以上 20以上 20以上

No.5平行軋延方向或垂直軋延方向




SGC490M 410以上 490以上 12以上 12以上 12以上 12以上 12以上 12以上

拉伸試驗特性

(2)JIS G3302化學成分表

種類符號 C Mn P S

SGCC 0.15以下 0.80以下 0.05以下 0.05以下

SGCD1 0.12以下 0.60以下 0.04以下 0.04以下

SGCD2 0.10以下 0.45以下 0.03以下 0.03以下

SGCD3 0.08以下 0.45以下 0.03以下 0.03以下

SGCD4 0.06以下 0.45以下 0.03以下 0.03以下

SGC340 0.25以下 1.70以下 0.20以下 0.05以下

SGC400 0.25以下 1.70以下 0.20以下 0.05以下

SGC440 0.25以下 2.00以下 0.20以下 0.05以下

SGC490 0.30以下 2.00以下 0.20以下 0.05以下

化學成分表單位：wt %


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規

格

資

料

註：1. 所有種類符號之彎曲角度需為 1800。

　　2. 試片採用 JIS No.3，試片方向為平行軋延方向。

種類符號

彎曲之內側間隔 (為試片標稱厚度之倍數 )

標稱厚度 (t) mm

t＜ 1.6 1.6≦ t＜ 3.0 3.0≦ t

附著量符號附著量符號附著量符號

Z27以下

Z35Z37

Z45Z60

Z27以下

Z35Z37

Z45Z60

Z27以下

Z35Z37

Z45Z60

SGCC 1 1 2 1 2 2 2 2 2

SGCD1 1 ─ ─ 1 ─ ─

─ ─ ─SGCD2

0(密貼 ) ─ ─

0(密貼 ) ─ ─SGCD3

SGCD4

SGC340 1 1 2 1 1 2 2 2 3

SGC400 2 2 2 2 2 2 3 3 3

SGC4403 3 3 3 3 3 3 3 3

SGC490

彎曲性

註：1. (*)表示 SGCD 4鋼捲於生產後六個月內，加工時不得有伸張應變痕之缺陷發生。

　　2. 括號內之數值供參考。

　　3. 1N/mm2=1MPa。

種類符號

降伏點或

降伏強度N/mm2

抗拉強度

N/mm2

伸長率 %

試片及方向

標稱厚度 (t) mm

0.25≦t＜0.40

0.40≦t＜0.60

0.60≦t＜ 1.0

1.0≦t＜ 1.6

1.6≦t＜ 2.5 2.5≦ t

SGCC (205以上) (270以上） ─ ─ ─ ─ ─ ─

JIS No.5平行軋延方向

SGCD1 ─ 270以上 ─ 34以上 36以上 37以上 38以上 ─

SGCD2 ─ 270以上 ─ 36以上 38以上 39以上 40以上 ─

SGCD3 ─ 270以上 ─ 38以上 40以上 41以上 42以上 ─

SGCD4(*) ─ 270以上 ─ 40以上 42以上 43以上 44以上 ─

SGC340 245以上 340以上 20以上 20以上 20以上 20以上 20以上 20以上JIS No.5平行軋延方向或垂直軋延方向




拉伸試驗特性


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註：1. 當碳含量超出 0.02％時，生產者可添加「鈦」以作為穩定元素，惟應小於「3.4N+1.5S」或 0.025％之兩者較小者。

　　2. 用途上如要求脫氧鋼時，訂購者可選擇 Total Al含量為 0.01％以上之「CS」或「FS」鋼種。

　　3. 生產者可視需要以真空脫氣處理、化學穩定元素或兩者均使用之方式生產供料。

　　4. 當碳含量在 0.02％以下時，生產者可添加「釩」、「鈮」或「鈦」作為穩定元素，此時「釩」與「鈮」之添加上限為 0.10％，鈦之添加上限則

　　　為 0.15％。

　　5. 為避免碳含量低於 0.02％，「CS」與「FS」鋼種另規定 Type B因應。

　　6. 不得以化學元素穩定方式處理供料。

　　7. 必須以化學元素穩定方式處理供料。

(3)ASTM A653

種類符號 C Mn P S Al Cu Ni Cr Mo V Nb Ti (1)

CS Type A2,3,4 0.10以下

0.60以下

0.030以下

0.035以下

─0.25以下

0.20以下

0.15以下

0.06以下

0.008以下

0.008以下

0.025以下

CS Type B2,5 0.02~0.15

0.60以下

0.030以下

0.035以下

─0.25以下

0.20以下

0.15以下

0.06以下

0.008以下

0.008以下

0.025以下

CS Type C2,3,4 0.08以下

0.60以下

0.100以下

0.035以下

─0.25以下

0.20以下

0.15以下

0.06以下

0.008以下

0.008以下

0.025以下

FS Type A2,6 0.10以下

0.50以下

0.020以下

0.035以下

─0.25以下

0.20以下

0.15以下

0.06以下

0.008以下

0.008以下

0.025以下

FS Type B2,5 0.02~0.10

0.50以下

0.020以下

0.030以下

─0.25以下

0.20以下

0.15以下

0.06以下

0.008以下

0.008以下

0.025以下

DDS Type A3,4 0.06以下

0.50以下

0.020以下

0.025以下

0.01以上

0.25以下

0.20以下

0.15以下

0.06以下

0.008以下

0.008以下

0.025以下

DDS Type C7 0.02以下

0.50以下

0.020~0.100

0.025以下

0.01以上

0.25以下

0.20以下

0.15以下

0.06以下

0.10以下

0.10以下

0.15以下

EDDS7 0.02以下

0.40以下

0.020以下

0.020以下

0.01以上

0.25以下

0.20以下

0.15以下

0.06以下

0.10以下

0.10以下

0.15以下

化學成分表

註：1. 產品厚度小於 0.51mm時，其伸長率規格值可降低 4％，且產品厚度大於 0.50mm且小於 0.71mm時，其伸長率規格值可降低 2%。

　　2. 鍍鋅鐵合金產品，其塑性應變比可降低 0.2，應變硬化指數可降低 0.01，產品厚度大於 1.50mm時，其塑性應變比規格值可降低 0.2。

　　3. 產品厚度小於 0.71mm時，其塑性應變比規格值可降低 0.2，應變硬化指數可降低 0.01。

　　4. 拉伸試驗試片須為橫向試片。

(4)EN 10346 成形用低碳鋼

種類符號C Si Mn P S Ti 降伏

強度N/mm2

抗拉強度

N/mm2

伸長率 (1)

min.(%)塑性應變比

min.應變硬化指數

min.max.(wt%)

DX51D 0.18

0.50

1.20 0.12

0.045 0.30

─ 270~500 22 ─ ─

DX52D

0.12 0.60 0.10

140~300 270~420 26 ─ ─

DX53D 140~260 270~380 30 ─ ─

DX54D 120~220

260~350

36 1.6(2) 0.18

DX56D 120~180 39 1.9(2)(3) 0.21(2)(3)

DX57D 120~170 41 2.1(2)(3) 0.22(2)(3)

化學成分與機械性質表

單位：wt %


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註：1. 產品厚度小於 0.51mm時，其伸長率規格值可降低 4%，大於 0.50mm且小於 0.71mm時，其伸長率規格值可降低 2%。

　　2. 產品厚度大於 1.50mm時，其塑性應變比規格值可降低 0.2。

　　3. 鋅鐵合金產品，其伸長率規格值可降低 2%，塑性應變比規格值可降低 0.2。

　　4. 拉伸試驗試片須為橫向試片。

(5)EN 10346 成形用高強度碳鋼

種類符號

C Si Mn P S Ti Nb T.Al

降伏強度N/mm2

抗拉強度N/mm2

伸長率 (1)(3)

min.(%)

烘烤硬化能min.

(Mpa)

塑性應變比(2)(3) min.

應變硬化指數min.

max.(wt%) wt%

HX180YD 0.01 0.20 0.70 0.06 0.025 0.12 0.09 ≦ 0.1 180~240

330~390 34 ─ 1.7 0.18

HX220YD 0.01 0.20 0.90 0.08 0.025 0.12 0.09 ≦ 0.1 220~280

340~420 32 ─ 1.5 0.17

HX260YD 0.01 0.25 1.30 0.10 0.025 0.12 0.09 ≦ 0.1 260~320

380~440 30 ─ 1.4 0.16

HX300YD 0.015 0.30 1.60 0.10 0.025 0.12 0.09 ≦ 0.1 300~360

390~470 27 ─ 1.3 0.15

HX180BD 0.10 0.50 0.70 0.06 0.025 0.12 0.09 ≦ 0.1 180~240

290~360 34 35 1.5 0.16

HX220BD 0.10 0.50 0.70 0.08 0.025 0.12 0.09 ≦ 0.1 220~280

320~400 32 35 1.2 0.15

HX260BD 0.10 0.50 0.80 0.10 0.025 0.12 0.09 ≦ 0.1 260~320

360~440 28 35 ─ ─

HX300BD 0.11 0.50 0.80 0.12 0.025 0.12 0.09 ≦ 0.1 300~360

400~480 26 35 ─ ─

HX260LAD 0.11 0.50 0.60 0.03 0.025 0.12 0.09 ≧ 0.015 260~330

350~430 26 ─ ─ ─

HX300LAD 0.11 0.50 1.00 0.03 0.025 0.15 0.09 ≦ 0.1 300~380

380~480 23 ─ ─ ─

HX340LAD 0.11 0.50 1.00 0.03 0.025 0.15 0.09 ≧ 0.015 340~420

410~510 21 ─ ─ ─

HX380LAD 0.11 0.50 1.40 0.03 0.025 0.15 0.09 ≧ 0.015 380~480

440~560 19 ─ ─ ─

HX420LAD 0.11 0.50 1.40 0.03 0.025 0.15 0.09 ≧ 0.015 420~520

470~590 17 ─ ─ ─

化學成分與機械性質表


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7.1.2 電鍍鋅

(1) JIS G3313

(2)CSC 電鍍鋅

註：1. 指 SECC中有抗拉強度與伸長率要求之規定者。

　　2. 指 SECF與 SECG鋼帶於製造後 6個月內，不得產生伸張應變痕缺陷。

　　3. 無法取得 5號試片時，試片之形狀與伸長率要求值可於買賣雙方協議後決定。

種類符號降伏強度N/mm2

抗拉強度N/mm2

伸長率 %

試片及方向厚度 (t)mm

0.40≦t＜ 0.60

0.60≦t＜ 1.0

1.0≦t＜ 1.6

1.6≦t＜ 2.5

SECC ─ ─ ─ ─ ─ ─

JIS No.5平行軋延方向 (3)

SECCT(1) ─ 270以上 34以上 36以上 37以上 38以上

SECD ─ 270以上 36以上 38以上 39以上 40以上

SECE ─ 270以上 38以上 40以上 41以上 42以上

SECF(2) ─ 270以上 40以上 42以上 43以上 44以上

SECG(2) ─ 270以上 42以上 44以上 45以上 46以上

種類符號降伏強度N/mm2

抗拉強度N/mm2

伸長率 %

試片及方向厚度 (t)mm

0.40≦t＜ 0.60

0.60≦t＜ 1.0

1.0≦t＜ 1.6

1.6≦t＜ 2.5

SECC1─ ─ ─ ─ ─ ─

JIS No.5平行軋延方向

SECC2

SECD ─ 270以上 36以上 38以上 39以上 40以上

SECE ─ 270以上 38以上 40以上 41以上 42以上

SECF ─ 270以上 40以上 42以上 43以上 44以上

拉伸試驗特性

拉伸試驗特性

註：內側間隔為試片標稱厚度之倍數

種類符號彎曲角度內側間隔試片與方向

SECC

1800 0(密貼 ) JIS No.3平行軋延方向

SECD

SECE

SECF

SECG

彎曲性


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7.1.3 鍍鋅量、化成處理、鋅花與塗油

7.1.3.1 熱浸鍍鋅

(1) CNS 1244

附著量符號 Z06 Z08 Z09 Z10 Z12 Z14 Z18 Z20 Z22 Z25 Z27 Z30

鍍鋅量 (g/m2) 60 80 90 100 120 140 180 200 220 250 275 305

相當鍍層厚度 (mm) 0.010 0.013 0.014 0.015 0.018 0.021 0.027 0.029 0.032 0.036 0.040 0.043

附著量符號 Z35 Z37 Z45 Z50 Z55 Z60 F04 F06 F08 F10 F12 F18

鍍鋅量 (g/m2) 350 370 450 500 550 600 40 60 80 100 120 180

相當鍍層厚度 (mm) 0.050 0.053 0.064 0.071 0.078 0.085 0.007 0.010 0.012 0.015 0.018 0.026

鍍鋅量對應之鍍層厚度表

化成處理之種類及符號表

化成處理種類符　　　號

不處理 M

磷酸鹽處理 P

鉻酸鹽處理 C

鉻酸鹽耐指紋處理 F

無鉻磷酸鹽處理 NP

無鉻鈍化處理 NC

無鉻耐指紋處理 NF

塗油之種類及其符號表

塗油種類符　　　號

塗油 O

不塗油 X

註：鋼捲的塗油符號依上表之規定，若無特別指定，通常非合金化鍍層不予塗油，合金化鍍層則予塗油。

鍍層表面鋅花處理之種類及符號表

鍍層表面鋅花處理種類符號備考

微細鋅花(minimized spangle) Z 抑制結晶成長而形成之細小鋅花加表面調質處理

正常鋅花(regular spangle) R 正常結晶過程形成之鋅花


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(2) JIS G3302

附著量符號 Z06 Z08 Z10 Z12 Z14 Z18 Z20 Z22 Z25 Z27

鍍鋅量 (g/m2) 60 80 100 120 140 180 200 220 250 275

相當鍍層厚度 (mm) 0.013 0.017 0.021 0.026 0.029 0.034 0.040 0.043 0.049 0.054

附著量符號 Z35 Z37 Z45 Z60 F04 F06 F08 F10 F12

鍍鋅量 (g/m2) 350 370 450 600 40 60 80 100 120

相當鍍層厚度 (mm) 0.064 0.067 0.080 0.102 0.008 0.013 0.017 0.021 0.026

鍍鋅量對應之鍍層厚度表




不處理 M

磷酸鹽處理 P

鉻酸鹽處理 C

無鉻鈍化處理 NC


塗油 O

不塗油 X


註：若需上表以外的化成處理，可由買賣雙方協議之，例如：無鉻抗指紋處理 (B)。




正常鋅花(regular spangle) R 正常結晶過程形成之鋅花


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英制公制

附著量符號鍍鋅量 (oz/ft2) 附著量符號鍍鋅量 (g/m2)

G01 ─ Z001 ─

G30 0.30 Z90 90

G40 0.40 Z120 120

G60 0.60 Z180 180

G90 0.90 Z275 275

G100 1.00 Z305 305

G115 1.15 Z350 350

G140 1.40 Z450 450

G165 1.65 Z500 500

G185 1.85 Z550 550

G210 2.10 Z600 600

G235 2.35 Z700 700

G300 3.00 Z900 900

G360 3.60 Z1100 1100

A01 ─ ZF001 ─

A25 0.25 ZF75 75

A40 0.40 ZF120 120

A60 0.60 ZF180 180

鍍鋅量表

(3) ASTM A653




不處理 M

鉻酸鹽處理 C


塗油 O

不塗油 X


註：若需上表以外的化成處理，可由買賣雙方協議之





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(4) EN 10346

附著量符號 Z100 Z140 Z200 Z225 Z275 Z350 Z450 Z600 ZF100 ZF120

鍍鋅量 (g/m2) 100 140 200 225 275 350 450 600 100 120

附著量符號對應之鍍鋅量



不處理 U

封孔處理 S

磷酸鹽處理 P

化學鈍化處理 C

註：若需上表以外的化成處理，可由買賣雙方協議之，例如：無鉻抗指紋處理 (B)。

　　目前封孔與磷酸鹽處理，並未產製。



塗油 O

不塗油 X




微細鋅花(minimized spangle) M 抑制結晶成長而形成之細小鋅花加表面調質處理

正常鋅花(regular spangle) N 正常結晶過程形成之鋅花


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表面品質之種類及符號表

表面品質種類符　　　號

一般表面品質 A

改良表面品質 B

最佳表面品質 C

7.1.3.2 電鍍鋅

JIS G3313/CSC規格化成處理之種類及符號表



不處理 ─

無鉻抗指紋處理 A/A


塗油 O

不塗油 X


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寬度 (w) 寬度許可差

w≦ 1500 +70

1500＜ w +100

寬度 (w) 弧形度許可差

630≦ w 任取 2000長度為 2以下

7.2許可差

7.2.1 CNS 1244與 JIS G3302熱浸鍍鋅鋼捲厚度許可差表

7.2.2 CNS 1244與 JIS G3302熱浸鍍鋅鋼捲寬度許可差

7.2.4 CNS 1244與 JIS G3302熱浸鍍鋅鋼捲弧形度許可差

7.2.3 CNS 1244與 JIS G3302熱浸鍍鋅鋼捲平坦度許可差

單位：mm

單位：mm

單位：mm

單位：mm

厚度許可差

630≦ w＜ 1000 1000≦ w＜ 1250 1250≦ w＜ 1600 1600≦ w

0.25≦ t＜ 0.40 ±0.05 ±0.05 ±0.06 ─

0.40≦ t＜ 0.60 ±0.06 ±0.06 ±0.07 ±0.08

0.60≦ t＜ 0.80 ±0.07 ±0.07 ±0.07 ±0.08

0.80≦ t＜ 1.00 ±0.07 ±0.08 ±0.09 ±0.10

1.00≦ t＜ 1.25 ±0.08 ±0.09 ±0.10 ±0.12

1.25≦ t＜ 1.60 ±0.10 ±0.11 ±0.12 ±0.14

1.60≦ t＜ 2.00 ±0.12 ±0.13 ±0.14 ±0.16

2.00≦ t＜ 2.50 ±0.14 ±0.15 ±0.16 ±0.18

標稱厚度 (t)

寬度 (w)

平坦度許可差 (max.)

全波狀邊緣波狀 (1) 中央波狀 (2)

w＜ 1000 12 8 6

1000≦ w＜ 1250 15 9 8

1250≦ w＜ 1600 15 11 8

1600≦ w 20 13 9

寬度 (w)

種類

註：厚度測量之位置須距邊 25mm以上。

註：1. 邊緣波狀係指於平板及鋼捲寬度方向邊緣所產生之波狀。

　　2. 中央波狀係指於平板及鋼捲中央部份所產生之波狀。


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7.2.5 ASTM A924M熱浸鍍鋅鋼捲厚度許可差

7.2.6 ASTM A924M熱浸鍍鋅鋼捲寬度、平坦度、弧形度許可差

單位：mm

單位：mm

單位：mm

單位：mm

單位：mm

厚度許可差

w≦ 1500 w＞ 1500

t≦ 0.40 ±0.08 ±0.08

0.40＜ t≦ 1.00 ±0.10 ±0.10

1.00＜ t≦ 1.50 ±0.13 ±0.13

1.50 ＜ t≦ 2.00 ±0.15 ±0.15

2.00 ＜ t≦ 2.40 ±0.30 ±0.34

訂單厚度 (t)

寬度 (w)


t≦ 1.0 1.0<t

w≦ 900 10 8

900＜ w≦ 1500 15 10

1500＜ w≦ 1880 20 15

寬度 (w)

厚度 (t)

厚度 (t) 寬度 (w)


強度等級 N/mm2(max.)

275 340 380~410 480 550

t≦ 1.5

w≦ 900 15 20 22 25 30

900＜ w≦ 1500 25 30 32 35 38

1500＜ w 35 38 40 45 48

1.5<tw≦ 1500 15 20 22 25 30

1500＜ w 25 30 32 35 38


上限下限

800≦ w＜ 1200 5 0

1200≦ w＜ 1500 6 0

1500 ≦ w＜ 1880 8 0

長度弧形度許可差

任意 2000 長 5以下

以標稱厚度 (Nominal Thickness)

平坦度許可差

平坦度許可差

寬度許可差

弧形度許可差

註：鍍鋅鋼捲厚度含底材與鍍鋅層，其厚度測量位置須距邊 25mm以上。

註：1. 本表不適用於結構用鋼（SS）與高強度低合金鋼（HSLA）。

　　2. 除非客戶特別指定，否則平坦度許可差以本表為檢驗標準。

註：1. 本表適用於結構用鋼（SS）與高強度低合金鋼（HSLA）。


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7.2.7 EN10143熱浸鍍鋅鋼捲厚度許可差

單位：mm

單位：mm

w≦ 1200 1200＜ w≦ 1500 1500＜ w

0.30＜ t≦ 0.40 ±0.04 ±0.05 ±0.06

0.40＜ t≦ 0.60 ±0.04 ±0.05 ±0.06

0.60＜ t≦ 0.80 ±0.05 ±0.06 ±0.07

0.80＜ t≦ 1.00 ±0.06 ±0.07 ±0.08

1.00＜ t≦ 1.20 ±0.07 ±0.08 ±0.09

1.20＜ t≦ 1.60 ±0.10 ±0.11 ±0.12

1.60＜ t≦ 2.00 ±0.12 ±0.13 ±0.14

2.00＜ t≦ 2.40 ±0.14 ±0.15 ±0.16

標稱厚度 (t)寬度 (w)

w≦ 1200 1200＜ w≦ 1500 1500＜ w

0.30＜ t≦ 0.40 ±0.05 ±0.06 ±0.07

0.40＜ t≦ 0.60 ±0.05 ±0.06 ±0.07

0.60＜ t≦ 0.80 ±0.06 ±0.07 ±0.08

0.80＜ t≦ 1.00 ±0.07 ±0.08 ±0.09

1.00＜ t≦ 1.20 ±0.08 ±0.09 ±0.11

1.20＜ t≦ 1.60 ±0.11 ±0.13 ±0.14

1.60＜ t≦ 2.00 ±0.14 ±0.15 ±0.16

2.00＜ t≦ 2.40 ±0.16 ±0.17 ±0.18




註：1. 鍍鋅鋼捲厚度含底材與鍍鋅層，其厚度測量位置須距邊 40mm以上。

　　2. 本表適用於一般軟鋼與降伏強度低於 (不含 )260MPa。


　　2. 本表適用於 260 MPa≦降伏強度＜ 360 MPa和 DX51D鋼種。


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單位：mm

w≦ 1200 1200＜ w≦ 1500 1500＜ w

0.30＜ t≦ 0.40 ±0.05 ±0.06 ±0.07

0.40＜ t≦ 0.60 ±0.06 ±0.07 ±0.08

0.60＜ t≦ 0.80 ±0.07 ±0.08 ±0.09

0.80＜ t≦ 1.00 ±0.08 ±0.09 ±0.11

1.00＜ t≦ 1.20 ±0.10 ±0.11 ±0.12

1.20＜ t≦ 1.60 ±0.13 ±0.14 ±0.16

1.60＜ t≦ 2.00 ±0.16 ±0.17 ±0.19

2.00＜ t≦ 2.40 ±0.18 ±0.20 ±0.21




　　2. 本表適用於 360 MPa≦降伏強度＜ 420 MPa。

單位：mm

w≦ 1200 1200＜ w≦ 1500 1500＜ w

0.30＜ t≦ 0.40 ±0.06 ±0.07 ±0.08

0.40＜ t≦ 0.60 ±0.06 ±0.08 ±0.09

0.60＜ t≦ 0.80 ±0.07 ±0.09 ±0.11

0.80＜ t≦ 1.00 ±0.09 ±0.11 ±0.12

1.00＜ t≦ 1.20 ±0.11 ±0.13 ±0.14

1.20＜ t≦ 1.60 ±0.15 ±0.16 ±0.18

1.60＜ t≦ 2.00 ±0.18 ±0.19 ±0.21

2.00＜ t≦ 2.40 ±0.21 ±0.22 ±0.24




　　2. 本表適用於 420 MPa≦降伏強度＜ 900 MPa。


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7.2.8 EN10143熱浸鍍鋅鋼捲寬度、平坦度與弧形度許可差

7.2.9 JIS G3313電鍍鋅鋼捲厚度許可差

單位：mm

單位：mm


上限下限

w≦ 1200 5 0

1200＜ w≦ 1500 6 0

1500＜ w≦ 1800 7 0

1800＜ w 8 0

長度弧形度許可差 (max.)

L≦ 2000 0.25%

2000＜ L 5 mm

寬度許可差

弧形度許可差

單位：mm

單位：mm


t<0.70 0.70≦ t＜ 3.00

w＜ 1200 10 8

1200≦ w＜ 1500 12 10

1500≦ w 17 15

寬度 (w)

厚度 (t)


t<0.70 0.70≦ t＜ 3.00

w＜ 1200 13 10

1200≦ w＜ 1500 15 13

1500≦ w 20 19

寬度 (w)

厚度 (t)

平坦度許可差

平坦度許可差

註：本表適用於一般軟鋼與降伏強度低於 260 MPa。

註：本表適用於 260 MPa≦降伏強度＜ 360 MPa和 DX51D鋼種。

單位：mm

630≦ w＜ 1000 1000≦ w＜ 1250 1250≦ w＜ 1600

0.40≦ t＜ 0.60 ±0.05 ±0.05 ±0.06

0.60≦ t＜ 0.80 ±0.06 ±0.06 ±0.06

0.80≦ t＜ 1.00 ±0.06 ±0.07 ±0.08

1.00≦ t＜ 1.25 ±0.07 ±0.08 ±0.09

1.25≦ t＜ 1.60 ±0.09 ±0.10 ±0.11

1.60≦ t＜ 2.00 ±0.11 ±0.12 ±0.13

2.00≦ t＜ 2.50 ±0.13 ±0.14 ±0.15


註：厚度量測位置係指鋼帶正常部份，於寬度方向距邊緣 15mm以上內側之任何位置


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料


w＜ 1250 +70

1250≦ w +100

7.2.10 JIS G3313電鍍鋅鋼捲寬度、平坦度與弧形度許可差單位：mm

單位：mm


全波狀邊緣波狀 (1) 中央波狀 (2)

w＜ 1000 12 8 6

1000≦ w＜ 1250 15 9 8

1250≦ w＜ 1600 15 11 8

1600≦ w 20 13 9

寬度 (w)

種類

註：1. 邊緣波狀係指於鋼帶寬度方向邊緣所產生之波狀。

　　2. 中央波狀係指於鋼帶中央部份所產生之波狀。

平坦度許可差

單位：mm 弧形度許可差

寬度 (w) 弧形度許可差

630≦ w 任取 2000長度為 2以下


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鋼片分類品級區分常見規格典型用途

成形加工用For Forming Fabrication

一般商用品級 (CQ)

CNS 1244 SGCCJIS G3302 SGCCASTM A653 CS、FS TYPEEN 10346 DX51D,DX52D

3C產品機殼、彩色鋼片底材、甲板、樓層板、LQF用途、OA家具與櫥櫃、建築材料

衝壓及深衝品級(DQ,DDQ,EDDQ)

CNS 1244 SGCD1~3JIS G3302 SGCD1~3ASTM A653 DS,DDSEN 10346 DX53D~DX57DEN 10346 HX180~300YD

家電用品、汽車內、外板金及零件組、冷氣機機殼、冰箱機殼及底座、洗衣機底座、電腦硬碟機殼、汽車用料等

結構用For Structural Uses 結構用品級（SQ）

CNS 1244 SGC~XXXJIS G3302 SGC~XXXASTM A653 SS-XXEN 10346 HX260~420 LAD

滑軌、導管、風管、自動販賣機機殼及零件組、鋼製門、建築材料、汽車用料等

鋼片分類品級區分常見規格典型用途

成形加工用For Forming Fabrication

一般商用品級 (CQ) JIS G3313 SECCCSC SECC1, SECC2

家電用品、3C產品機殼、LCD-TV背板等

衝壓及深衝品級(DQ、DDQ、EDDQ)

JIS G3313 SECD、SECE、SECF、SECGCSC SECD、SECE、SECF

家電用品、馬達機殼等

7.3鍍鋅產品品級區分

7.3.1 熱浸鍍鋅品級區分

7.3.2 電氣鍍鋅品級區分


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產製範圍

8.1 可產製產品及最小質量

8.2 可產製尺寸範圍

產品別最小質量

熱浸鍍鋅鋼捲 3 公噸以上 /每捲

電氣鍍鋅鋼捲 3 公噸以上 /每捲

單位：mm

產品種類厚度範圍寬度範圍

熱浸鍍鋅 0.30~2.60 780~1830

電鍍鋅 0.40~2.00 865~1525

註：1.以上設備能力僅供參考，詳細產品接單尺寸範圍請參考中鋼網站 (www.csc.com.tw):客戶服務→產品製造→可接單尺寸之公告為準。

2.如有對規格、尺寸與鍍層種類、鍍鋅層重量以及相關塗覆皮膜處理等有特殊要求時，請洽營業或技術服務單位協商。


31

3133313

標記與包裝

9.1 鍍鋅產品標記

1 2

3456789

10

11

9.2 鍍鋅產品包裝

內部包裝外部包裝

防水防銹紙

內徑灰紙板

外周灰紙板

外徑金屬護角

外周保護鋼片內徑保護鋼片

內徑金屬護角

鋼帶

1 2 3 4 5 6 7 8 9 10 11

中鋼商標

中鋼名稱

品名規格尺寸鑑別代號

淨質量總質量塗覆代號

品類爐號

熱浸鍍鋅鋼捲 V V V V V V V V V V V

電鍍鋅鋼捲 V V V V V V V V V V

標示項目

產品別

防水防銹紙

PE膜灰紙板紙護角保護鋼片金屬護角

外周側邊內徑外徑內徑外周側邊內徑外徑內徑

熱浸鍍鋅鋼捲 V V V V V V

電鍍鋅鋼捲 V V V V V V V V

包裝材料

產品別

外徑紙護角

內徑紙護角側邊灰紙板


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客戶使用注意事項

（1）防銹

鍍鋅鋼片如果未經過適當處理，將容易在表面銹蝕，一般產出時都會依照指定施以適當的防銹油或後

處理，出貨時會有完整包裝加以保護，但是在鋼捲儲存及使用過程中，因為環境因素會造成鋼捲或鋼

片容易銹蝕，尤其儲存環境在高濕度及溫度發生劇烈變化時，特別容易發生結露問題，此時需要特別

注意結露的防止及水的排除。另外，大氣中的灰塵或酸性空氣，也很容易在鋼片表面形成銹蝕的起始

點，因此儲存或加工過程必須排出這些因素，才能獲得良好的表面品質。

（2）時效

一般低碳鋼因為具有固溶碳氮，因此如果未經過適當處理，加工過程會產生所謂的伸張應變痕或雞爪

痕，所以鋼廠會對這些產品先施以適當的調質軋延，將降伏伸長消除。然而，隨著儲存時間拉長後，

降伏點伸長又會出現，我們稱為時效問題，時效主要與鋼中的固溶碳氮、存放溫度與時間有關。對於

這些鋼種應該盡快使用，並採用先進先出管理。

（3）皮膜處理鋼捲加工後去汙處理

鍍鋅鋼片表面經常會施以耐指紋皮膜處理，作為短暫性防銹處理，此種鋼料在經過加工後，會再進行

以溶劑或脫脂液進行脫脂、去污、除銹清洗及皮膜防銹等表面處理，這些處理均可能造成塗膜變色及

破壞情況，因此朝低藥劑濃度、低處理溫度、及短時間作業較有利，具體建議如下：

a.脫脂處理液，建議酸鹼度 10>PH值>7.0，並儘量以接近室溫處理，時間不宜過長。

b.避免以極性有機溶劑處理，採用非極性溶劑擦拭時必須輕擦。

c.如需要烘乾，烘乾溫度<180℃，烘乾時間<15分鐘。

（4）塗裝

藉由塗裝進一步保護鍍鋅製品或提升其美觀性與功能性，是常見的應用方式之一。塗料種類的選擇與

塗裝方式的採用，須審慎考量產品的形狀、應用與友善環境的要求。

─簡易塗裝模式

表面清洗→塗裝→烘烤

在洗淨的底材表面上直接塗裝，塗料的選擇應注意到與後處理層的相容性。

─耐久性塗裝模式

表面清洗 →化學處理→ 塗裝 →烘烤

適用長久使用與防蝕要求高的產品，應用的底材通常是冷軋或鍍鋅塗油鋼板等。在洗淨的底材表面與

化學藥劑產生全面性鈍化反應後再塗裝，鈍化膜可避免塗料直接接觸活潑的金屬，塗膜具備長期的穩

定性以保護產品。常見的化學處理為磷酸鋅處理，緻密的磷酸鋅結晶可提升底漆對底材的附著力，多

層次的塗裝，應注意到與塗料間的相容性。


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3333

─ 塗裝失效的因素

(a) 不充分的清洗：常見的情形是鋼片表面殘留油脂與污染物，這些異物使塗料未真正黏住底材，導致塗膜附著

力低而失效。最好能了解防銹油、潤滑油等的特性，再慎選清洗劑與清洗方式，並注意鋼捲儲存條件與塗裝

作業環境，即可有助於改善不充分的清洗。

(b) 不適當的化學處理：如果化學處理鈍化膜不足或不均，一旦外界腐蝕因子接觸到金屬，活潑的金屬即很容易

氧化，氧化物便會破壞底漆對底材的附著力。另，如果鈍化膜鬆散、結晶粗化，或受處理液中的殘渣污染，

也會使塗膜附著力不足。最好能了解化學處理液的反應特性，注意到不同鋼片的表面差異，並適當調整處理

液的濃度、溫度與處理時間，以及重視處理後的表面清洗。

(c) 不合適的塗料：塗料的選擇應考量產品最終用途及使用環境，並採取適當的塗裝程序，才能確保塗料能充分

潤濕處理後的底材表面，與塗裝後有相容性，同時對環境的腐蝕因子才有阻抗能力。

（5）銲接

（a）鍍鋅鋼片因鍍鋅層阻抗值較低，相較於同材質之冷軋鋼片，需提供更高的銲接電流或更長的銲接時間，

才能獲得足夠的電阻熔接熱量。

（b）鍍鋅鋼片容易在銲接時發生電極沾附鍍鋅層現象，電極耐久性能較冷軋鋼片低，因此使用過程中應適時

進行電極研磨及替換。

（c）若能調適正確的銲接參數值 (銲接時間及銲接電流 )，鍍鋅鋼片仍具有與冷軋鋼片相近之可銲電流範圍

(Weld Lobe Curve)與銲接強度。

（d）以電阻點銲製程為例，欲進行鍍鋅鋼片 (GA)之銲接時，請參酌以下銲接參數建議表之設定，以確保穩

定之銲接品質。

（e）欲進行銲核之破壞性試驗，請參閱 JIS Z3136及 Z3137規範。

電阻點銲之銲接參數建議表

鋼片厚度範圍 (mm)

電極壓力(kgf)

電極尖端直徑 (mm)

銲前夾持時間 (cyc)

銲接時間(cyc)

銲接電流(kA)

銲後夾持時間 (cyc)

0.30~0.49 170 5 > 30 9 飛爆電流 -0.4 2

0.50~0.69 180 5 > 30 10 飛爆電流 -0.4 2

0.70~0.89 210 6 > 30 11 飛爆電流 -0.4 2

0.90~1.09 230 6 > 30 12 飛爆電流 -0.4 3

1.10~1.29 250 6 > 30 14 飛爆電流 -0.4 3

1.30~1.49 270 6 > 30 16 飛爆電流 -0.4 3

1.50~1.69 300 6 > 30 18 飛爆電流 -0.4 4

1.70~1.89 340 6 > 30 20 飛爆電流 -0.4 4

1.90~2.09 380 6 or 8 > 30 22 飛爆電流 -0.4 4

2.10~2.29 420 6 or 8 > 30 26 飛爆電流 -0.4 6

2.30~2.49 450 8 > 30 28 飛爆電流 -0.4 6


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單位轉換表

長度

ft inch mm m

1 12 304.8 0.3048

0.08333 1 25.4 0.0254

0.003281 0.03937 1 0.001

強度

ksi(=1000psi) psi kgf/mm2 N/mm2(Mpa)

1 1000 0.70307 6.89476

0.001 1 7.0307×10-4 6.89476×10-3

1.42233 1422.33 1 9.80665

0.145038 145.038 1.101972 1

能量( 衝擊值 )

ft-lbf kgf-m N-m (=Joule)

1 0.138255 1.35582

7.23301 1 9.80665

0.737562 0.101972 1

質量 1 kg = 2.20462 lb

力 1 kgf = 9.80665 N


35

35

HR30T與 HRB硬度換算表

HR15T與 HRB硬度換算表

HR30T 換算 HRB HR30T 換算 HRB HR30T 換算 HRB HR30T 換算 HRB

35.0 28.1 47.0 46.0 59.0 63.9 71.0 81.9

36.0 29.6 48.0 47.5 60.0 65.4 72.0 83.4

37.0 31.1 49.0 49.0 61.0 66.9 73.0 84.9

38.0 32.5 50.0 50.5 62.0 68.4 74.0 86.4

39.0 34.0 51.0 52.0 63.0 69.9 75.0 87.9

40.0 35.5 52.0 53.5 64.0 71.4 76.0 89.4

41.0 37.0 53.0 55.0 65.0 72.9 77.0 90.8

42.0 38.5 54.0 56.5 66.0 74.4 78.0 92.3

43.0 40.0 55.0 58.0 67.0 75.9 79.0 93.8

44.0 41.5 56.0 59.5 68.0 77.4 80.0 95.3

45.0 43.0 57.0 60.9 69.0 78.9 81.0 96.8

46.0 44.5 58.0 62.4 70.0 80.4 82.0 98.3

HR15T 換算 HRB HR15T 換算 HRB HR15T 換算 HRB HR15T 換算 HRB

70.0 28.8 76.0 47.3 82.0 65.8 88.0 84.3

70.5 30.3 76.5 48.8 82.5 67.3 88.5 85.8

71.0 31.9 77.0 50.4 83.0 68.8 89.0 87.3

71.5 33.4 77.5 51.9 83.5 70.4 89.5 88.9

72.0 35.0 78.0 53.4 84.0 71.9 90.0 90.4

72.5 36.5 78.5 55.4 84.5 73.5 90.5 92.0

73.0 38.0 79.0 56.5 85.0 75.0 91.0 93.5

73.5 39.6 79.5 58.1 85.5 76.6 91.5 95.0

74.0 41.1 80.0 59.6 86.0 78.1 92.0 96.6

74.5 42.7 80.5 61.1 86.5 79.6 92.5 98.1

75.0 44.2 81.0 62.7 87.0 81.2 93.0 99.7

75.5 45.7 81.5 64.2 87.5 82.7

註：此換算表為引述 ASTM E140表 2，若未記錄於 ASTM表中的硬度，則使用內插法計算而得。

註：此換算表為引述 ASTM E140表 2，若未記錄於 ASTM表中的硬度，則使用內插法計算而得。


36

36

HV與 HRB硬度換算表

HV 換算 HRB HV 換算 HRB HV 換算 HRB HV 換算 HRB

85 41.0 145 76.6 210 93.4 330 ─

90 48.0 150 78.7 220 95.0 340 (108.0)

95 52.0 155 79.9 230 96.7 350 ─

100 56.2 160 81.7 240 98.1 360 (109.0)

105 59.4 165 83.1 250 99.5 370 ─

110 62.3 170 85.0 260 (101.0) 380 (110.0)

115 65.0 175 86.1 270 (102.0)

120 66.7 180 87.1 280 (103.5)

125 69.5 185 88.8 290 (104.5)

130 71.2 190 89.5 300 (105.5)

135 73.2 195 90.7 310 ─

140 75.0 200 91.5 320 (107.0)

註：此換算表為引述 SAE J417表 2，若未記錄於 SAE表中的硬度，則使用內插法計算而得。

　　括弧內之數值已超出 HRB之範圍，僅提供參考。


37

3733373

主要規格對照 CNS 1244 JIS G3302 JFS A3011 ASTM A653 EN 10346

軟鋼

SGCC SGCC 　 CS A,B,C DX51D

SGCC SGCC JAC270C 　 DX52D

SGCD1 SGCD1 JAC270D DX53D

SGCD2 SGCD2 　　　

SGCD3 SGCD3 JAC270E DDS A DX54D

SGCD4 SGCD4 JAC270F EDDS DX56D

烘烤硬化鋼　 JAC270H 　 HX180BD

　 JAC340H 　 HX220BD

高深衝用鋼

　 JAC340P 　 HX220YD,HX220PD

　　 HX260YD

　 JAC440P 　 HX300YD

一般高強度鋼

　 JAC340W 　　

　 JAC390W 　　

　 JAC440W 　　

高降伏比鋼

HX260LAD

　　　 HX300LAD

SGC 440 SGC 440 HX340LAD

　 JAC440R HSLAS50(340)

HX380LAD

　　 HX420LAD

JAC590R

低降伏比鋼

　 JAC590Y 　 HDT600X



結構用鋼

　　 SS 33(230) S220GD

SGC340 SGC340 　 SS 37(255)

SGC400 SGC400 　 SS 40(275)　 S280GD

SGC490 SGC490 　

上述表列 CNS、JIS、JFS、ASTM、EN鋼種對照表，僅近似、非等同。

主要規格對照


38

3838

訂貨需註明事項

需提供項目例

1

規格名稱：代號及鋼種

JIS G3302 SGCC ZSBX UE

鍍層種類 ZZ(GI), ZF(GA)

鍍鋅層厚度 Z08, Z12, F06, F08..等

化成處理種類 M, C, P, NC

表面品質

一般級 (GP)

外露級 (GE)

非外露級 (UE)

2 上油或不上油不上油

3 尺寸 (厚×寬×長 (或鋼捲 )) 1.0mm×1219mm×Coil

4 鋼捲尺寸 (內徑，外徑 ) ID 508mm，OD 1650mm以下

5 質量最大單重 10t以下

訂單質量 45t

6 最終用途製管用

7 特殊要求 (有需求時提出 ) 硬度 HRB 55以下

一 . 本產品手冊僅供參考，規格部份請以各規格協會出版之規格書為準，標記與包裝內容則以本公司實際狀況為準，若有變動恕不另行通知；

　　訂貨時，可產製規格與尺寸請再確認詳細狀況。

二 . 最小訂購量及交貨期，請洽本公司各營業銷售組。

三 . 若您未能於手冊內尋得所需資料，請逕向下列單位洽詢。

1. 營業銷售處產品

銷售一組TEL:886-7-3371035FAX:886-7-5372550

鋼板、熱軋鋼板

銷售二組TEL:886-7-3371242FAX:886-7-5372551

線材、棒鋼、球化材、小鋼胚、生鐵

銷售四組TEL:886-7-3371151FAX:886-7-5372570

熱軋粗鋼捲、熱軋鋼捲、熱軋鋼片、熱軋酸洗塗油鋼捲

銷售五組TEL:886-7-3371130FAX:886-7-5372575

冷軋及電鍍鋅鋼品

銷售六組TEL:886-7-3371144FAX:886-7-5372576

熱、冷軋汽車料、熱浸鍍鋅及電磁鋼捲

2. 冶金技術服務組TEL:07-8021335, 0800-741135, 07-8021111轉 2201, 3909, 2574, 5380, 5598FAX:07-8039553

3. 冶金規範及試驗組TEL:07-8021111轉 5797FAX:07-8051292


39


40

1


41

2 32 3

China Steel Building (Group Headquarters)

The quality policy of China Steel Corporation

China Steel Corporation, based-on customer orientation, will incessantly innovate, research & develop to provide excellent and eco-friendly products, and consequently fulfi ll our responsibility to society.


42

4 55

#2 CGL – middle sect ion

A NAME FOR QUALITY, TECHNOLOGY AND SERVICE

PRODUCT MANUAL

1 1. Brief Introduction

2 2. Product and Service Features

3 3. Introduction of New Products

5 4. Certifi cation

7 5. Manufacturing Process and Major Equipments

11 6. Application Examples

12 7. Specifi cation

12 7.1 Chemical Composition and Mechanical Properties

20 7.2 Tolerances

26 7.3 Classifi cation of Quality

27 8. Product Availability

28 9. Marking and Packing

29 10. Precautions for use

32 11. Conversion Tables

35 12. Comparison of Specifi cation

36 13. Ordering Information


43

1

Plant Greening

BRIEF IN

TRODUCTIO

N

China Steel Corporation (CSC), located at

Kaohsiung, Taiwan was founded in December

1971. With annual capacity (in terms of crude steel)

around 10 million tonnes, CSC produces a range

of products that includes plates, bars, wire rods,

hot and cold rolled coils, electrogalvanized coils,

electrical steel coils, hot-dip galvanized coils, and Ti/

Ni-base alloy. The domestic market takes roughly

65% of CSC's production and the exports take the

remaining 35%. CSC is the largest steel company

in Taiwan, enjoying more than 50% of the domestic

market. Major export destinations are Mainland

China, Japan and Southeast Asia.

CSC is very active in innovation, and has strong

capability to put the innovations into practice. The

company's vision is:〝We aspire to be a trustworthy

steel company of global distinction that pursues

growth, environmental protection, energy saving and

value-innovation〞. CSC actively puts into practice

its corporate values of 〝teamwork, entrepreneurial

approach, down-to-earthiness and pursuit of

innovation〞, as well as its operations beliefs of 〝

promotion of social well-being, result orientation,

implementation of teamwork, and emphasis on

employees' self-realization.〞 CSC keeps deepening

the roots for its core business in steel, and devoted

to integrate the related downstream industries

to foster healthy development and international

competitiveness of Taiwan's steel related industry.


44

2

China Steel Corporation (CSC) is an integrated steel producer. After its phase II expansion construction was completed on June 30, 1982, CSC launched its production of Cold Rolling Mill. Subsequently, CSC went through to complete its phases III and IV expansion constructions. Products include cold-rolled coils, electrical steel coils, electro-galvanized coils, hot-dip galvanized coils and color coils. This manual introduces Zn-coated steel (cold rolled base) products only.

Through unceasing developments and improvements over the years, CSC's Zn-coated steel products have been gradually diversified. They are available for various processing uses and have been suffi cient to meet the requirements of industries, such as hot-dip galvanized steels with general formability, high-strength-improved formability and high strength dual-phase, high conductivity anti-fi nger printed electrolytic zinc-coated steel coils, galvanized products with one-side coating and oiling, etc.

Through the integrated quality management of iron making, steelmaking and steel rolling to the release and shipping of fi nished products, CSC's Zn-coated steel products are excellent in their inner and outer quality, dimensional accuracy and processing properties. Zn-coated coils have ultra smooth surface which can be directly used in exposedness, as well as have excellent adhesion and corrosion resistance of galvanized layers owing to the adoption of two-stage degreasing equipment and full radiant tube heating mode, and close monitor of furnace atmosphere for stably controlling the galvanized quantities. Moreover, CSC provides customers with organic or inorganic post-treatment fi lms completely complied with non-toxic matter, which are products with mixed good corrosion-resistance, lubrication, weldability and paintability.

CSC's Zn-coated steel products have been approved by certifications such as ISO 9001, ISO/TS16949, JIS MARK and IECQ QC080000 (Hazardous Substance Process Management), etc. They meet the regulations of RoHS (Restriction of Hazardous Substances Directive) and REACH（Registration, Evaluation, Authorisation and Restriction of Chemical substances）, and are verifi ed through certifi cation of high-strength grades by the well-known carmakers. The approvals and qualifications are testament to CSC's commitment to reliable and superior products, thus providing its customers a peace of mind.

The vision of CSC's customer services is to gain customers' appreciation and trust and help them be successful, and the aim of that is to promote customers' technology and upgrade the steel industry. In order to enhance the customer services, CSC adopts multi-step and multi-level service pattern which is characterized by emphasizing on (1) the pre-sale services for helping customers to choose suitable materials and improve their production processes; (2) handling complains and claims from customers with proper and rapid manner, and conducting customers the corresponding improvements to the root-causes; (3) providing customers with the developed high-grade materials to meet the upgrade policy for domestic industries.

The stable and reliable quality of CSC's steel products have gained the acceptance of domestic industries widely, and CSC has also been selected as the first priority provider to purchase their needed steel materials owing to CSC's quick and efficient technical services. CSC will continue to improve customer services and the technical technologies both for customers and CSC itself to promote steel-use industries' international competitiveness.

PRODUCT AN

D SER

VICE FEATU

RES


45

3

High Conductive AFP (Anti-Finger Print) Galvanized Steel (EG/CG) Product with excellent conductivity, it is applicable for computer case, electrical appliances, or other

3C industries' components. Suitable for anti-EMI(Electromagnetic Interference) and anti-electrostatic

requirements of the circumstances.

GA Lubricating Coated Steel Automotive steel with high lubricity coating fi lm with chemical treatment, it can signifi cantly improve the

formability, prolong the mould's life, and avoid stamping rupture.

High Strength Galvannealed Steel (EN HX260YD/HX300YD、JFS JAC390P)High strength and good stamping formability, suitable for automotive metal and components which

demand high formability purposes.

INTR

ODUCTIO

N O

F NEW

PRODUCTS


46

4

High-Strength Low Alloy Galvanized/Galvannealed Steel (EN HX380LAD / HX420LAD/ HX460LAD、JFS JAC590R)High strength and low carbon equivalent. Those steel grades will be suitable for use in automotive structures

and components, and meet the demand for light-weight purposes.

High-Strength Dual Phase Galvanized/Galvannealed Steel(EN HCT780X / HCT980X、JFS JAC780Y/JAC980Y)This dual phase steel contains mainly ferrite and partly martensite, with very high strength and low carbon

equivalent welding characteristics. Those steel grades will be suitable for use in automotive structures and

components, and meet the demand for light-weight body and high security applications.

Single-sided Electro-Galvanized Oiled ProductsIt will be developed for the locomotive fuel tank production. The single-sided galvanized surface located

inside the tank has good corrosion resistance, while the other cold-rolled side has excellent appearance and

weldability. It enhances the effi ciency and quality, and prevents alloying between welding head and zinc coating

which could lead to lower welding strength and life of welding head.


47

5

CER

TIFICATIO

N

ISO 9001 Certifi cate ISO/TS 16949 Certifi cate


48

6

IECQ Certifi cate JIS MARK 07008 Certifi cateJIJIJIJISSSS MAMAMAMARKRKRKRK 00007070707008080808 CCCCerererertitititififififi cacacacatetetete


49

7 8

ConsumableAnode RadialOneSideElectroplatingLine

CSC is using UEC's patent: CAROSEL. Zinc is coated layer-by-layer and uniformly through electrochemical reactions. The unique feature of CAROSEL is to use 4 individual tanks (for each side of strip), thus single-sided electroplated galvanizing coils are applicable.

Electroplating with CAROSEL

CAROSELConductor Roll

Multiple reagent can be used to post-treatment coating by coating roll. The thickness of films can be well controlled.

Coating Area

(Automated Surface Inspection System)The advantages of ASIS are as follows:(1) Overall consecutive automatic inspection→Signifi cantly

enhance the inspection(2) Real-time quality feedback→ Instant defect mending(3) Traceable and statistical data→ Convenient for further

investigate.

ASIS (EGL/CGL)

MAN

UFAC

TURING PR

OCESS AN

D M

AJOR EQ

UIPM

ENTS

Manufacturing Processes of Electroplated Galvanizing Line(EGL)

AS-ColdRolled Strip Welding Cleaning Pickling Electro-

Plating(Zn)Passivation or Special coating

OilingEG

Products

Thickness gauge

Entry section

Cleaning section Pickling section

#1 Plating section(Bottom side)

#2 Plating section(Top side) Coating weight gauge

Anti-fi nger printing coating section

Post-treatment section Delivery section

Inspection section(ASIS/Thickness/ Width gauge)


50

9

SP

EC

IFICATIO

NS

PE

CIFIC

AATION

9 10

Annealed strips will then enter the Zinc bath where Zinc bath is at 460℃ . The composition of Zinc bath is periodically analyzed and cleaned, and its temperature is steadily controlled.

Zinc-coating Bath

Eliminating the yield point of steel, endowing the strip with surface roughness, and improving the fl atness.

Skin-pass Mill & Tension Leveler

Multiple reagent can be used to post-treatment coating by coating roll. The thickness of fi lms can be well controlled.

Post-treatment Coating Area

Continuous Annealing Furnace

Galvannealing Furnace

During the annealing process, cold-rolled strips will re-crystallize and eliminate residual inner stress to improve mechanical properties. The protective gas in the furnace will also help zinc adhesion to the surface of strips.

High-frequency induced heater is applied to enhance GA alloying and its uniformity.

GA Holding & cooling Annealing section Entry section

Manufacturing Processes of Continuous Hot Dip Galvanizing Line (CGL)

AS-ColdRolled Strip Welding Cleaning Annealing Hot-Dip

Galvanizing

Galvannealing

Skin-pass rolling / Tension Levelling

Passivationor

Special CoatingOiling

CG Products

Vertical & Horizontal Inspection (ASIS)

Delivery section

Post-treatment section Special coating treatment

Skin-pass Mill

Pre-Cleaning & Cleaning section

Pay-off reelWelder & thickness gauge

Galvannealing(IH)

Zinc potAir Knife

Tension Leveller

Tension reel

Side trimmerThickness gauge

Oiler


51

1111111

APPLICATIO

N EXAM

PLES

Automobile

Antenna

Ceiling suspension frame and Steel frame

Color sheet(Siding and roofi ng)

Furniture

Color sheet (Roof)

Slide

TV back plate

Kitchenware and Home Appliance


52

1212

SPECIFIC

ATION

Chemical composition

7.1Chemical Compositions and Mechanical Properties 7.1.1 Hot-Dip Galvanized Steel

(1)JIS G3302

NOTE：1. The bending angle shall be 1800 for any grade of steel.

2. The test piece shall be JIS No.3, and one shall be taken from the sample in rolling direction.

Symbol of grade C Mn P S

SGCC 0.15max. 0.80max. 0.05max. 0.05max.

SGCD1 0.12max. 0.60max. 0.04max. 0.04max.




SGC340 0.25max. 1.70max. 0.20max. 0.05max.




Symbolof grade

Internal spacing of bend(number of sheets of nominal thickness)

Nominal thickness(t) mm

t＜ 1.6 1.6≦ t＜ 3.0 3.0≦ t

Coating mass symbol Coating mass symbol Coating mass symbol

Z06 toZ27

Z35Z37

Z45Z60

Z06 toZ27

Z35Z37

Z45Z60

Z06 toZ27

Z35Z37

Z45Z60

SGCC 1 1 2 1 2 2 2 2 2

SGCD1 1 ─ ─ 1 ─ ─

─ ─ ─SGCD2

0(Flat on itself)

─ ─ 0(Flat on itself)

─ ─SGCD3

SGCD4

SGC340 1 1 2 1 1 2 2 2 3

SGC400 2 2 2 2 2 2 3 3 3

SGC4403 3 3 3 3 3 3 3 3

SGC490

Bend test conditions

Unit：wt %

The contents of this catalog are for reference only. Custom

ers are urged to consult the specifi cations published by the corresponding associations. Inform

ations of the available CSC

steel grades, as shown herein m

ay be updated w

ithout notice to comply w

ith actual production situations.


53

13

NOTE：1. (*)For the sheet and coil of SGCD4, the stretcher strain shall not be generated when working is performed during 6 months after manufacturing.

2. Values in parentheses are shown for reference.

3. 1N/mm2=1MPa.

Symbol of grade

Yield pointor proof stressN/mm2

Tensile strengthN/mm2

Elongation % Test pieceand

direction oftension test

Nominal thickness (t) mm

0.25≦t＜0.40

0.40≦t＜0.60

0.60≦t＜ 1.0

1.0≦t＜ 1.6

1.6≦t＜ 2.5 2.5≦ t

SGCC (205min.) (270min.） ─ ─ ─ ─ ─ ─

JIS No.5 in rolling direction

SGCD1 ─ 270min. ─ 34min. 36min. 37min. 38min. ─



SGCD4(*) ─ 270min. ─ 40min. 42min. 43min. 44min. ─

SGC340 245min. 340min. 20min. 20min. 20min. 20min. 20min. 20min. JIS No.5 in rolling direction or perpendicularto the rollingdirection

SGC400 295min. 400min. 18min. 18min. 18min. 18min. 18min. 18min.



Tension test characteristics

(2) ASTM A653 Chemical composition table

NOTE：1. For steels containing 0.02% carbon or more, titanium is permitted at the producer's option, to the lesser of 3.4N+1.5S or 0.0025%.

2. When deoxidized steel is required for the application, the purchaser has the option to order CS and FS to a min. of 0.01% total aluminum.

3. Steel is permitted to be fi nished as a vacuum degassed or chemically stabilized steel or both, at the producer's option.

4. For carbon levels less than or equal to 0.02%, vanadium, columbium or combinations thereof are permitted to be used as stabilizing elements

at the producer's option. In such case, the applicable limit for vanadium and columbium shall be 0.10% max and the limit for titanium shall

be 0.15% max.

5. For CS and FS, specify Type B to avoid carbon levels below 0.02%.

6. Shall not be furnished as stabilized steel.

7. Shall be furnished as stabilized steel.

Symbol of grade C Mn P S Al Cu Ni Cr Mo V Nb Ti(1)

CS Type A2,3,4 0.10max.

0.60max.

0.030max.

0.035max.

─0.25max.

0.20max.

0.15max.

0.06max.

0.008max.

0.008max.

0.025max.

CS Type B2,5 0.02~0.15

0.60max.

0.030max.

0.035max.

─0.25max.

0.20max.

0.15max.

0.06max.

0.008max.

0.008max.

0.025max.

CS Type C2,3,4 0.08max.

0.60max.

0.100max.

0.035max.

─0.25max.

0.20max.

0.15max.

0.06max.

0.008max.

0.008max.

0.025max.

FS Type A2,6 0.10max.

0.50max.

0.020max.

0.035max.

─0.25max.

0.20max.

0.15max.

0.06max.

0.008max.

0.008max.

0.025max.

FS Type B2,5 0.02~0.10

0.50max.

0.020max.

0.030max.

─0.25max.

0.20max.

0.15max.

0.06max.

0.008max.

0.008max.

0.025max.

DDS Type A3,4 0.06max.

0.50max.

0.020max.

0.025max.

0.01min.

0.25max.

0.20max.

0.15max.

0.06max.

0.008max.

0.008max.

0.025max.

DDS Type C7 0.02max.

0.50max.

0.020~0.100

0.025max.

0.01min.

0.25max.

0.20max.

0.15max.

0.06max.

0.10max.

0.10max.

0.15max.

EDDS7 0.02max.

0.40max.

0.020max.

0.020max.

0.01min.

0.25max.

0.20max.

0.15max.

0.06max.

0.10max.

0.10max.

0.15max.

Unit：wt%


54

14

SP

EC

IFICATIO

N

NOTE：1. Decrease min. elongation values apply for product thickness t≦ 0.5mm (minus 4 units) and 0.5mm＜ t≦ 0.7mm (minus 2 units).2. For GA products, r90-value reduced by 0.2 apply, and the min. n90-value reduced by 0.01 apply, and for t＞ 1.5mm, the min. r90-value reduced by 0.2 apply.3. For t≦ 0.70mm, the min. r90-value reduced by 0.2 apples and the min. n90-value reduced by 0.01 apply.4. The value of the tension test apply for transverse pieces.

(3) EN 10346 Low Carbon Steel for Cold Forming

Symbol of

grade

C Si Mn P S Ti Yield strengthN/mm2

TensilestrengthN/mm2

Elongation(1)

min.(%)Plastic strainratio min.

Strain hardening exponent min.max.(wt%)

DX51D 0.18

0.50

1.20 0.12

0.045 0.30

─ 270~500 22 ─ ─

DX52D

0.12 0.60 0.10

140~300 270~420 26 ─ ─

DX53D 140~260 270~380 30 ─ ─

DX54D 120~220

260~350

36 1.6(2) 0.18

DX56D 120~180 39 1.9(2)(3) 0.21(2)(3)

DX57D 120~170 41 2.1(2)(3) 0.22(2)(3)

Chemical composition and mechanical properties

NOTE：1. Decrease min. elongation values apply for product thickness t≦ 0.5mm (minus 4 units) and for 0.5mm＜ t≦ 0.7mm (minus 2 units).

2. For t＞ 1.5mm, the min. r90-value reduced by 0.2 apply.

3. For GA products, elongation value could minus 2 units, r90-value reduced by 0.2 apply.

4. The value of the tension test apply for transverse pieces.

(4) EN 10346 High Strength Steel for Cold Forming

Symbolof

grade

C Si Mn P S Ti Nb T.AlYield

strengthN/mm2


Elongation(1)(3)

min.(%)

BakedhardeningIndex min.(MPa)

Plastic strain

ratio(2)(3) min

Strain hardening exponentmin.

max.(wt%) wt%

HX180YD 0.01 0.20 0.70 0.06 0.025 0.12 0.09 ≦ 0.1 180~240

330~390 34 ─ 1.7 0.18

HX220YD 0.01 0.20 0.90 0.08 0.025 0.12 0.09 ≦ 0.1 220~280

340~420 32 ─ 1.5 0.17

HX260YD 0.01 0.25 1.30 0.10 0.025 0.12 0.09 ≦ 0.1 260~320

380~440 30 ─ 1.4 0.16

HX300YD 0.015 0.30 1.60 0.10 0.025 0.12 0.09 ≦ 0.1 300~360

390~470 27 ─ 1.3 0.15

HX180BD 0.10 0.50 0.70 0.06 0.025 0.12 0.09 ≦ 0.1 180~240

290~360 34 35 1.5 0.16

HX220BD 0.10 0.50 0.70 0.08 0.025 0.12 0.09 ≦ 0.1 220~280

320~400 32 35 1.2 0.15

HX260BD 0.10 0.50 0.80 0.10 0.025 0.12 0.09 ≦ 0.1 260~320

360~440 28 35 ─ ─

HX300BD 0.11 0.50 0.80 0.12 0.025 0.12 0.09 ≦ 0.1 300~360

400~480 26 35 ─ ─

HX260LAD 0.11 0.50 0.60 0.03 0.025 0.12 0.09≧0.015 260~330

350~430 26 ─ ─ ─

HX300LAD 0.11 0.50 1.00 0.03 0.025 0.15 0.09 ≦ 0.1 300~380

380~480 23 ─ ─ ─

HX340LAD 0.11 0.50 1.00 0.03 0.025 0.15 0.09≧0.015 340~420

410~510 21 ─ ─ ─

HX380LAD 0.11 0.50 1.40 0.03 0.025 0.15 0.09≧0.015 380~480

440~560 19 ─ ─ ─

HX420LAD 0.11 0.50 1.40 0.03 0.025 0.15 0.09≧0.015 420~520

470~590 17 ─ ─ ─

Chemical composition and mechanical properties


55

15

7.1.2 Electrolytic Galvanized Steel

(1) JIS G3313

NOTE：1. Applied to SECC when the purchaser has designated a tension test for it.

2. Sheet and coil of SECF and SECG shall be free from stretcher strain occuring during working for 6 rnonths following the manufacture.

3. Where sampling of No.5 test piece is impracticable, shape and elongation of test piece shall be as agreed between the purchaser and the

manufacturer.

Symbol of grade

Yield point or proof stressN/mm2


Elongation %

Test piece and direction

Nominal thickness(t)mm

0.40≦t＜ 0.60

0.60≦t＜ 1.0

1.0≦t＜ 1.6

1.6≦t＜ 2.5

SECC ─ ─ ─ ─ ─ ─

JIS No.5rolling

direction(3)

SECCT(1) ─ 270min. 34min. 36min. 37min. 38min.

SECD ─ 270min. 36min. 38min. 39min. 40min.

SECE ─ 270min. 38min. 40min. 41min. 42min.

SECF(2) ─ 270min. 40min. 42min. 43min. 44min.

SECG(2) ─ 270min. 42min. 44min. 45min. 46min.


NOTE：Internal spacing of bend is the multiple of the test piece nominal thickness.

Symbol of grade Bend angle Internal spacing of bend Test piece and direction

SECC

1800 0(Flat on itself) JIS No.3 rolling direction

SECD

SECE

SECF

SECG

Bend test conditions

(2)CSC Electrolytic Galvanized Steel

Symbol of grade

Yield point or proof stressN/mm2


Elongation %

Test piece and direction

Nominal thickness(t)mm

0.40≦t＜ 0.60

0.60≦t＜ 1.0

1.0≦t＜ 1.6

1.6≦t＜ 2.5

SECC1─ ─ ─ ─ ─ ─

JIS No.5rolling direction

SECC2

SECD ─ 270min. 36min. 38min. 39min. 40min.

SECE ─ 270min. 38min. 40min. 41min. 42min.

SECF ─ 270min. 40min. 42min. 43min. 44min.



56

16

SP

EC

IFICATIO

N

7.1.3 Coating mass, Chemical treatment, Spangle and Oiling

7.1.3.1 Hot-Dip Galvanized Steel

(1)JIS G3302

Coating mass symbol Z06 Z08 Z10 Z12 Z14 Z18 Z20 Z22 Z25 Z27

Coating mass (g/m2) 60 80 100 120 140 180 200 220 250 275

Equivalent coating thickness (mm) 0.013 0.017 0.021 0.026 0.029 0.034 0.040 0.043 0.049 0.054

Coating mass symbol Z35 Z37 Z45 Z60 F04 F06 F08 F10 F12

Coating mass (g/m2) 350 370 450 600 40 60 80 100 120

Equivalent coating thickness (mm) 0.064 0.067 0.080 0.102 0.008 0.013 0.017 0.021 0.026

Equivalent coating thickness

Type and symbol of chemical treatment

Type and symbol of oiling

Type of chemical treatment Symbol

Untreated M

Phosphate treatment P

Chromate treatment C

Chromate-free treatment NC

Type of oiling Symbol

Oiled O

Unoiled X

NOTE：The type and the symbol of the sheets, corrugated sheets and coils shall be given in the table below. Unless otherwise specifi ed, the non-alloyed

coating shall be unoiled and the alloyed coating shall be oiled.

NOTE：The type of chemical treatment other than the above table may be agreed upon between the purchaser and the manufacturer, like chromate-free anti-fi nger print treatment(B).

Type and symbol of surface finish for non-alloyed coating

Type of coating surface finish Symbol Remark

Minimized spangle Z A coating having the spangles obtained by restricting normal spangle formation to a minimum.

Regular spangle R A coating having the spangles as a result of the unrestricted growth of zinc crystals during normal solidification.


57

17

Inch-Pound Units SI Units

Coating mass symbol Coating mass (oz/ft2) Coating mass symbol Coating mass (g/m2)

G01 ─ Z001 ─

G30 0.30 Z90 90

G40 0.40 Z120 120

G60 0.60 Z180 180

G90 0.90 Z275 275

G100 1.00 Z305 305

G115 1.15 Z350 350

G140 1.40 Z450 450

G165 1.65 Z500 500

G185 1.85 Z550 550

G210 2.10 Z600 600

G235 2.35 Z700 700

G300 3.00 Z900 900

G360 3.60 Z1100 1100

A01 ─ ZF001 ─

A25 0.25 ZF75 75

A40 0.40 ZF120 120

A60 0.60 ZF180 180

Coating mass

(2) ASTM A653




Untreated M

Chromate treatment C


Oiled O

Unoiled X



NOTE：The type of chemical treatment other than the above table may be agreed upon between the purchaser and the manufacturer.



Minimized spangle Z A coating having the spangles obtained by restricting normal spangle formation to a minimum.


58

18

SP

EC

IFICATIO

N

(3) EN 10346

Coating mass symbol Z100 Z140 Z200 Z225 Z275 Z350 Z450 Z600 ZF100 ZF120

Coating mass (g/m2) 100 140 200 225 275 350 450 600 100 120

Equivalent coating thickness



Untreated U

Sealed S

Phosphate treatment P

Chemically passivated C

NOTE：The type of chemical treatment other than the above table may be agreed upon between the purchaser and the manufacturer, like chromate-free anti -fi nger print treatment (B).



Oiled O

Unoiled X





Minimized spangle M A coating having the spangles obtained by restricting normal spangle formation to a minimum.

Normal spangle N A coating having the spangles as a result of the unrestricted growth of zinc crystals during normal solidification.

Type and symbol of surface qualities

Type of surface qualities Symbol

As coated surface A

Improved surface B

Best quality surface C


59

19

7.1.3.2 Electrolytic Galvanized Steel

JIS G3313/CSC SpecificationType and symbol of chemical treatment



Untreated ─

Chromate-free anti-finger treated A/A


Oiled O

Unoiled X


60

20

SP

EC

IFICATIO

N

Width (w) Tolerance on product width

w≦ 1500 +70

1500＜ w +100

Width (w) Maximum value of camber

630≦ w 2 in any 2000 length

7.2 Tolerances

7.2.1 JIS G3302 Thickness tolerance for Hot-Dip Galvanized Steel

7.2.2 JIS G3302 Width tolerance for Hot-Dip Galvanized Steel

7.2.4 JIS G3302 Camber tolerance for Hot-Dip Galvanized Steel

7.2.3 JIS G3302 Flatness tolerance for Hot-Dip Galvanized Steel

Unit：mm

Unit：mm

Unit：mm

Unit：mm

Thickness tolerance

630≦ w＜ 1000 1000≦ w＜ 1250 1250≦ w＜ 1600 1600≦ w

0.25≦ t＜ 0.40 ±0.05 ±0.05 ±0.06 ─

0.40≦ t＜ 0.60 ±0.06 ±0.06 ±0.07 ±0.08

0.60≦ t＜ 0.80 ±0.07 ±0.07 ±0.07 ±0.08

0.80≦ t＜ 1.00 ±0.07 ±0.08 ±0.09 ±0.10

1.00≦ t＜ 1.25 ±0.08 ±0.09 ±0.10 ±0.12

1.25≦ t＜ 1.60 ±0.10 ±0.11 ±0.12 ±0.14

1.60≦ t＜ 2.00 ±0.12 ±0.13 ±0.14 ±0.16

2.00≦ t＜ 2.50 ±0.14 ±0.15 ±0.16 ±0.18

Nominal thickness(t)

width (w)

Flatness tolerance (max.)

Bow, wave Edge wave(1) Centre buckle(2)

w＜ 1000 12 8 6

1000≦ w＜ 1250 15 9 8

1250≦ w＜ 1600 15 11 8

1600≦ w 20 13 9

width(w)

Type of strain

NOTE：The thickness tolerance shall be measured at any point 25 mm or over from the side edge(the end in the width direction)。

NOTE：1.Edge wave: wave apearing on the edge of steel sheet (end part in the width direction).

2. Centre buckle: wave appearing on the centre part of the steel sheet.


61

21

NOTE：This table applies to all designations include SS, HSLAS.

Flatness tolerance

Flatness tolerance

Width tolerance

Nominal thickness

7.2.5 ASTM A924M Thickness tolerance for Hot-Dip Galvanized Steel

7.2.6 ASTM A924M Width, flatness, camber tolerance for Hot-Dip Galvanized Steel

Unit：mm

Unit：mm

Unit：mm

Unit：mm

Unit：mm

Thickness tolerance

w≦ 1500 w＞ 1500

t≦ 0.40 ±0.08 ±0.08

0.40＜ t≦ 1.00 ±0.10 ±0.10

1.00＜ t≦ 1.50 ±0.13 ±0.13

1.50 ＜ t≦ 2.00 ±0.15 ±0.15

2.00 ＜ t≦ 2.40 ±0.30 ±0.34

thickness(t)

Width (w)


t≦ 1.0 1.0<t

w≦ 900 10 8

900＜ w≦ 1500 15 10

1500＜ w≦ 1880 20 15

width(w)

thickness(t)

thickness(t) width(w)


Strength N/mm2(max.)

275 340 380~410 480 550

t≦ 1.5

w≦ 900 15 20 22 25 30

900＜ w≦ 1500 25 30 32 35 38

1500＜ w 35 38 40 45 48

1.5<tw≦ 1500 15 20 22 25 30

1500＜ w 25 30 32 35 38

Width (w)Width tolerance

Upper limit Lower limit

800≦ w＜ 1200 5 0

1200≦ w＜ 1500 6 0

1500 ≦ w＜ 1880 8 0

Length Camber tolerance

In any 2000 length Under 5

Camber tolerance

NOTE：The coated sheet thickness includes the base metal and coating and is measured at any point across the width of the coated sheet not less than

25mm from a side edge.

NOTE：1. This table applies to all designations except SS, HSLAS.

2. This table also applies to sheet cut to length from coils by the consumer when adequate fl attening measures are performed.


62

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7.2.7 EN10143 Thickness tolerance for Hot-Dip Galvanized Steel

w≦ 1200 1200＜ w≦ 1500 1500＜ w

0.30＜ t≦ 0.40 ±0.04 ±0.05 ±0.06

0.40＜ t≦ 0.60 ±0.04 ±0.05 ±0.06

0.60＜ t≦ 0.80 ±0.05 ±0.06 ±0.07

0.80＜ t≦ 1.00 ±0.06 ±0.07 ±0.08

1.00＜ t≦ 1.20 ±0.07 ±0.08 ±0.09

1.20＜ t≦ 1.60 ±0.10 ±0.11 ±0.12

1.60＜ t≦ 2.00 ±0.12 ±0.13 ±0.14

2.00＜ t≦ 2.40 ±0.14 ±0.15 ±0.16

Nominal thickness(t)Width (w)

w≦ 1200 1200＜ w≦ 1500 1500＜ w

0.30＜ t≦ 0.40 ±0.05 ±0.06 ±0.07

0.40＜ t≦ 0.60 ±0.05 ±0.06 ±0.07

0.60＜ t≦ 0.80 ±0.06 ±0.07 ±0.08

0.80＜ t≦ 1.00 ±0.07 ±0.08 ±0.09

1.00＜ t≦ 1.20 ±0.08 ±0.09 ±0.11

1.20＜ t≦ 1.60 ±0.11 ±0.13 ±0.14

1.60＜ t≦ 2.00 ±0.14 ±0.15 ±0.16

2.00＜ t≦ 2.40 ±0.16 ±0.17 ±0.18


Nominal thickness

Nominal thickness

NOTE：1. The coated sheet thickness includes the base metal and coating and is measured at any point across the width of the coated sheet not less than 40mm

from a side edge.

2. Tolerance for steel grades with specifi ed minimum proof strength Rp0.2 ＜ 260MPa

NOTE：1. The coated sheet thickness includes the base metal and coating and is measured at any point across the width of the coated sheet not less

than 40mm from a side edge.

2. Tolerance for steel grades with specifi ed minimum proof strength 260MPa≦ Rp0.2＜ 360MPa and for grade DX51D.

Unit：mm

Unit：mm


63

23

w≦ 1200 1200＜ w≦ 1500 1500＜ w

0.30＜ t≦ 0.40 ±0.05 ±0.06 ±0.07

0.40＜ t≦ 0.60 ±0.06 ±0.07 ±0.08

0.60＜ t≦ 0.80 ±0.07 ±0.08 ±0.09

0.80＜ t≦ 1.00 ±0.08 ±0.09 ±0.11

1.00＜ t≦ 1.20 ±0.10 ±0.11 ±0.12

1.20＜ t≦ 1.60 ±0.13 ±0.14 ±0.16

1.60＜ t≦ 2.00 ±0.16 ±0.17 ±0.19

2.00＜ t≦ 2.40 ±0.18 ±0.20 ±0.21


w≦ 1200 1200＜ w≦ 1500 1500＜ w

0.30＜ t≦ 0.40 ±0.06 ±0.07 ±0.08

0.40＜ t≦ 0.60 ±0.06 ±0.08 ±0.09

0.60＜ t≦ 0.80 ±0.07 ±0.09 ±0.11

0.80＜ t≦ 1.00 ±0.09 ±0.11 ±0.12

1.00＜ t≦ 1.20 ±0.11 ±0.13 ±0.14

1.20＜ t≦ 1.60 ±0.15 ±0.16 ±0.18

1.60＜ t≦ 2.00 ±0.18 ±0.19 ±0.21

2.00＜ t≦ 2.40 ±0.21 ±0.22 ±0.24


Nominal thickness

Nominal thickness

NOTE：1. The coated sheet thickness includes the base metal and coating and is measured at any point across the width of the coated sheet not less than

40mm from a side edge.

2. Tolerance for steel grades with specifi ed minimum proof strength 360MPa≦ Rp0.2＜ 420MPa

NOTE：1. The coated sheet thickness includes the base metal and coating and is measured at any point across the width of the coated sheet not less

than 40mm from a side edge.

2. Tolerance for steel grades with specifi ed minimum proof strength 420MPa≦ Rp0.2＜ 900MPa

Unit：mm

Unit：mm


64

24

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Flatness tolerance

Camber tolerance

Flatness tolerance

Width tolerance

7.2.8 EN10143 Width, flatness, camber tolerance for Hot-Dip Galvanized Steel

7.2.9 JIS G3313 Thickness tolerance for Electrolytic Galvanized Steel

Unit：mm

Unit：mm

Unit：mm

Unit：mm

Unit：mm

Width (w)Width tolerance

Upper limit Lower limit

w≦ 1200 5 0

1200＜ w≦ 1500 6 0

1500＜ w≦ 1800 7 0

1800＜ w 8 0

Length Camber tolerance (max.)

L≦ 2000 0.25%

2000＜ L 5 mm


t<0.70 0.70≦ t＜ 3.00

w＜ 1200 10 8

1200≦ w＜ 1500 12 10

1500≦ w 17 15

Width (w)

Thickness (t)


t<0.70 0.70≦ t＜ 3.00

w＜ 1200 13 10

1200≦ w＜ 1500 15 13

1500≦ w 20 19

Width (w)

Thickness (t)

NOTE：Tolerance for steel grades with specifi ed minimum proof strength Rp0.2 ＜ 260MPa

NOTE：Tolerance for steel grades with specifi ed minimum proof strength 260MPa ≦ Rp0.2 ＜ 360MPa and for grade DX51D.

630≦ w＜ 1000 1000≦ w＜ 1250 1250≦ w＜ 1600

0.40≦ t＜ 0.60 ±0.05 ±0.05 ±0.06

0.60≦ t＜ 0.80 ±0.06 ±0.06 ±0.06

0.80≦ t＜ 1.00 ±0.06 ±0.07 ±0.08

1.00≦ t＜ 1.25 ±0.07 ±0.08 ±0.09

1.25≦ t＜ 1.60 ±0.09 ±0.10 ±0.11

1.60≦ t＜ 2.00 ±0.11 ±0.12 ±0.13

2.00≦ t＜ 2.50 ±0.13 ±0.14 ±0.15

Nominal thickness(t)width(w)

NOTE：The thickness tolerance shall be measured at any point 15 mm or over from the side edge(the end in the width direction)。


65

25

Camber tolerance

Width tolerance

Flatness tolerance

Unit：mm

Unit：mm

Unit：mm

width(w) Width tolerance

w＜ 1250 +70

1250≦ w +100

7.2.10 JIS G3313 Width, flatness, camber tolerance for Electrolytic Galvanized Steel


Bow and wave Edge wave(1) Centre buckle(2)

w＜ 1000 12 8 6

1000≦ w＜ 1250 15 9 8

1250≦ w＜ 1600 15 11 8

1600≦ w 20 13 9

Width (w)

Type of strain

NOTE：1.Edge wave: wave apearing on the edge of steel sheet (end part in the width direction).

2. Centre buckle: wave appearing on the centre part of the steel sheet.

Width (w) Camber tolerance

630≦ w 2 max.(Any portion 2,000 in length)


66

26

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IFICATIO

N

Classification Quality Common Specification Typical Application

For Forming Fabrication

Commercial Quality(CQ)JIS G3302 SGCCASTM A653 CS、FS TYPEEN 10346 DX51D,DX52D

Computer case & parts、Pre-painted base、Deck、Construction material、LQF use、OA Furniture and Cabinet

Drawing & Deep Drawing Quality & Extreme Drawing Quality (DQ,DDQ,EDDQ)

JIS G3302 SGCD1~3ASTM A653 DS,DDSEN 10346 DX53D~DX57DEN 10346 HX180~300YD

Household electrical appliances、Inner or outer panel of automobile、Air condition or washing machine case & frame、Computer case & parts、Automobile used steel

For Structural Uses Structural Quality（SQ）JIS G3302 SGC~XXXASTM A653 SS-XXEN 10346 HX260~420 LAD

Slide rail、Duck、Auto-vending machines case & parts、Steel door、Construction material、Automobile used steel

Classification Quality Common Specification Typical Application

For Forming Fabrication

Commercial Quality(CQ) JIS G3313 SECC Computer case & parts、Household

electrical appliance、LCD-TV parts

Drawing & Deep Drawing Quality & Extreme Drawing Quality (DQ,DDQ,EDDQ)

JIS G3313 SECD、SECE、SECF、SECG

Household、electrical appliance、Machine case⋯etc.

7.3 Classifi cation of Quality

7.3.1 Hot-Dip Galvanized Steel

7.3.2 Electrolytic galvanized Steel Coils


67

2722227

PRODUCT AVAILABILITY

8.1 Unit mass

8.2 Available Sizes

Product Type Min. Uni t mass

Hot-dip Galvanized Coil 3t/Coil

Electrolytic Galvanized Coil 3t/Coil

Product Type Thickness Width

Hot-dip Galvanized Coil 0.30~2.60 780~1830

Electrolytic Galvanized Coil 0.40~2.00 865~1525

NOTE：1. The available sizes in the table above are for reference, and the details please refer China Steel web site(www.csc.com.tw): Customer service→ Production→ Available sizes and Thickness.

2. If you have any question concerning steel specifi cation, sizes, coating type, coating mass and chemical treatment, please contact CSGT or CSC technical service people.

Unit：mm


68

2828

MAR

KING AN

D PAC

KING

9.2 Packing for Zn-coated steel

9.1 Marking for Zn-coated steel

1 2 3 4 5 6 7 8 9 10 11

CSClogo

CSCname

Productname Specification Size Identification no Net

massGrossmass

Coatingcode

Qualitytype

Heat no

Hot-Dip Galvanized Coil V V V V V V V V V V V

Electrolytic Galvanized Coil V V V V V V V V V V

Marking Item

Product Category

VCIPaper

Hard-Board Paper PaperEdge Protector

Sheet Metal Protector

MetalEdge Protector

circumferential surface

side wall

inner surface

outside diameter

inside diamete

circumferential surface

side wall

inner surface

outside diameter

inside diameter

Hot-DipGalvanized Coil V V V V V V

Electrolytic Galvanized Coil V V V V V V V V

PackingMaterial

ProductCategory

Inside packing Outside packing

VCI Paper

Hard-Board Paper

Hard-Board Paper

Metal Edge Protector

Sheet Metal Protector

Sheet Metal ProtectorMetal Edge Protector

Strapping

Paper Edge Protector

Paper Edge Protector

Hard-Board Paper

1 2

3456789

10

11


69

2922229

(1) Rust Prevention

If antirust treatment is not properly performed for the Zn-coated steel products, it will be easy to rust the steel surface.

Therefore, the coils have to be spread with proper rust preventive oil or chemical treatment according to the orders

to protect zinc layer surface, and the coils are packed completely to protect them before shipping. However, the

steel sheets and coils are easy to rust owing to the environmental factors during their storage and use. Especially

the condensation problems are easy to occur when the coil storage is in an environment of high humidity and high/

low temperature with rapid changes. Therefore, it should particularly pay attention to the prevention of condensation

and drain water in advance. Besides, since the dust or acidic substance in the atmosphere are also easy to rust the

surface of steel coils or sheets, such problems in the storage or processing must be eliminated for keeping good

surface quality.

(2) Stretcher strain and Aging

There are solid solution Carbon and Nitrogen in the low carbon steels. If they are not treated properly, the stretcher

strain marks will be occurred in the process. Therefore, the temper rolling process will be carried out appropriately on

these products to eliminate the extension of yield point. However, the extension of yield point may appear again with

the longer period of storage as we called the aging problem. Aging is mainly related to solid solution Carbon, storing

temperature and time. The “fi rst in, fi rst out (FIFO)”management to use these grades of steel is recommended as

soon as possible in order to avoid the aging problems.

(3) Decontamination of fi lm treatment coils after processing

The surfaces of Zn-coated steel sheets are often treated with anti-fi nger print as a temporary antirust treatment.

Such steel materials will again be degreased, decontaminated, rust removed and cleaned, and fi lm antirust treated

after processing. Since these treatments may cause discoloration and damages on the film of steel surface,

the operations toward to the lower concentration of medicament, the lower processing temperature, and shorter

processing time will be advantageous. Concrete recommendations are as follows：

a. The pH of degreasing liquid is recommended as 7.0＜ pH＜ 10.0. It is possibly close to the room temperature

and not to take much time to treat degreasing liquid.

b. Please use the non-polar solvents to clean samples and graze it slightly. Do not use the polar organic solvents.

c. If the products are needed to dry, the drying temperature and time are maximum 180℃ and maximum 15 minutes

respectively.

(4) Painting

The painting is one of the common ways to apply for further protecting the Zn-coated steel products, or enhancing

their beauty and function. The selection of types of paint and the adoption of painting methods have to carefully

consider the shape of products, the application, and the environment-friendly requirements.

Simple painting modeSurface cleaning → painting → baking

It may paint directly on the surface of cleaned substrate. The choice of paint should consider the compatibility

with the post-treatment layer.

PREC

AUTIO

NS FO

R U

SE


70

3030

Durability painting mode

Surface cleaning → chemical treatment → painting → baking

These products are suitable for the long-term use and high-corrosion-resistance requirements. The substrates of application

are usually the cold-rolled steels or Zn-coated steels with oiled. It should wait for painting on the cleaned substrate surfaces

after the overall chemical passivation reaction with chemical medicament is produced. The passivated fi lms can keep the

paints from directly contacting with active metals, and have long-term stability to protect the products. Common chemical

treatment is phosphate-zinc treatment. The densely phosphate-zinc crystals can improve the adhesion between the primer

and the substrate. The multi-level painting should consider the compatibility with the paints.

The factors of failure coating

(a) Insuffi cient clean: The residual oil and contaminant are often seen on the steel surfaces. These foreign matters may

cause the paint to be unable to bond to the substrate surfaces, and may result in declining to fail the adhesion of fi lm. It

is better to understand the rust preventive oil, lubricants and other characteristics, proper choosing the way of cleaning

and cleaning agents, paying more attention to storage conditions and painting operation environment for helping to

improve the insuffi cient clean.

(b) Unsuitable chemical treatment: If the passivation fi lm of chemical treatment is not suffi cient or uneven, once outside

corrosion factors are contacted with metal, the reactive metal is very easy to oxidize. Then oxide will thoroughly destroy

the adhesion of primer paint to the steel surface. Moreover, if there are loose passivation fi lms and coarse crystals or

the residue contamination on the chemical treatment liquid, it will also cause the defi ciency of the fi lm adhesion. It is

better to understand the reaction properties of the chemical treatment liquid, paying more attention on the differences

between different cold-rolled steel sheet surfaces, properly adjusting the treatment liquid concentration, temperature

and time, as well as emphasizing on the clean of the treated surface.

(c) Improper paint：The environment and the end-use of products should be considered in the selection of paint, and the

appropriate painting procedure should be adopted to ensure that the treated substrate surfaces are suffi ciently wetted,

are compatible with the paint, and have the ability to resist the environmental corrosion factors.

(5) Welding

a. To compare with cold-rolled steel sheets, the Zn-coated steel sheets have lower resistance values and need more welding

current or longer welding time to obtain suffi cient resistance welding heat.

b. The foreign matter phenomenon contaminated with electrodes in the welding process occurs easily when the Zn-coated

steel coils or sheets are used. The electrode durability of the Zn-coated steel products is lower than that of cold rolled

coils or sheets. Therefore, the electrode must be replaced or polished during welding if necessary.

c. If the welding parameters (welding time and welding current) can be adjusted properly, the Zn-coated steel sheets can get

similar weld lobe curve and welding strength to the cold-rolled steel sheets.

d. The resistance welding process as an example, if you want to weld the Zn-coated steel sheets (GA), please refer to the

following table of suggested welding parameters to ensure stable welding quality.

e. If the destructive test of the welding-core is needed to perform, please refer to the JIS Z3136 and Z3137 specifi cations.


71

3131

Suggested welding parameter table of resistance welding

Thickness of Steel (mm)

Electrode force (kgf)

Electrode Face Diameter

(mm)

Holding time before welding

(cyc)

Welding time (cyc)

Welding Current (kA)

Holding time after welding

(cyc)

0.30~0.49 170 5 > 30 9 Expulsion of welding current-0.4 2








1.90~2.09 380 6 or 8 > 30 22 Expulsion of welding current-0.4 4

2.10~2.29 420 6 or 8 > 30 26 Expulsion of welding current-0.4 6



72

3232

CONVER

SION TABLES

Length

ft inch mm m

1 12 304.8 0.3048

0.08333 1 25.4 0.0254

0.003281 0.03937 1 0.001

Stress

ksi(=1000psi) psi kgf/mm2 N/mm2(Mpa)

1 1000 0.70307 6.89476

0.001 1 7.0307×10-4 6.89476×10-3

1.42233 1422.33 1 9.80665

0.145038 145.038 1.101972 1

AbsorbedEnergy

ft-lbf kgf-m N-m (=Joule)

1 0.138255 1.35582

7.23301 1 9.80665

0.737562 0.101972 1

Mass 1 kg = 2.20462 lb

Force 1 kgf = 9.80665 N


73

3333

Conversion Table from HR30T to HRB

Conversion Table from HR15T to HRB

HR30T Converted HRB HR30T Converted

HRB HR30T Converted HRB HR30T Converted

HRB

35.0 28.1 47.0 46.0 59.0 63.9 71.0 81.9

36.0 29.6 48.0 47.5 60.0 65.4 72.0 83.4

37.0 31.1 49.0 49.0 61.0 66.9 73.0 84.9

38.0 32.5 50.0 50.5 62.0 68.4 74.0 86.4

39.0 34.0 51.0 52.0 63.0 69.9 75.0 87.9

40.0 35.5 52.0 53.5 64.0 71.4 76.0 89.4

41.0 37.0 53.0 55.0 65.0 72.9 77.0 90.8

42.0 38.5 54.0 56.5 66.0 74.4 78.0 92.3

43.0 40.0 55.0 58.0 67.0 75.9 79.0 93.8

44.0 41.5 56.0 59.5 68.0 77.4 80.0 95.3

45.0 43.0 57.0 60.9 69.0 78.9 81.0 96.8

46.0 44.5 58.0 62.4 70.0 80.4 82.0 98.3

HR15T Converted HRB HR15T Converted

HRB HR15T Converted HRB HR15T Converted

HRB

70.0 28.8 76.0 47.3 82.0 65.8 88.0 84.3

70.5 30.3 76.5 48.8 82.5 67.3 88.5 85.8

71.0 31.9 77.0 50.4 83.0 68.8 89.0 87.3

71.5 33.4 77.5 51.9 83.5 70.4 89.5 88.9

72.0 35.0 78.0 53.4 84.0 71.9 90.0 90.4

72.5 36.5 78.5 55.4 84.5 73.5 90.5 92.0

73.0 38.0 79.0 56.5 85.0 75.0 91.0 93.5

73.5 39.6 79.5 58.1 85.5 76.6 91.5 95.0

74.0 41.1 80.0 59.6 86.0 78.1 92.0 96.6

74.5 42.7 80.5 61.1 86.5 79.6 92.5 98.1

75.0 44.2 81.0 62.7 87.0 81.2 93.0 99.7

75.5 45.7 81.5 64.2 87.5 82.7

Note：This table shall be in according with ASTM E140. Hardness not in the table of ASTM is obtained by interpolation。

Note：This table shall be in according with ASTM E140. Hardness not in the table of ASTM is obtained by interpolation。


74

SP

EC

IFICATIO

N

34

SP

EC

IFFICICATATIOIO

NNC

ON

VERSIO

N TABLES

Conversion Table from HV to HRB

HV Converted HRB HV Converted

HRB HV Converted HRB HV Converted

HRB

85 41.0 145 76.6 210 93.4 330 ─

90 48.0 150 78.7 220 95.0 340 (108.0)

95 52.0 155 79.9 230 96.7 350 ─

100 56.2 160 81.7 240 98.1 360 (109.0)

105 59.4 165 83.1 250 99.5 370 ─

110 62.3 170 85.0 260 (101.0) 380 (110.0)

115 65.0 175 86.1 270 (102.0)

120 66.7 180 87.1 280 (103.5)

125 69.5 185 88.8 290 (104.5)

130 71.2 190 89.5 300 (105.5)

135 73.2 195 90.7 310 ─

140 75.0 200 91.5 320 (107.0)

Note：1. This table shall be in according with ASTM E140. Hardness not in the table of ASTM is obtained by interpolation.

2. The value in parentheses is out of the scope of HRB and for reference.It may be reported as the round number


75

3533353

classification JIS G3302 JFS A3011 ASTM A653 EN 10346

Mild Steel

SGCC 　 CS A,B,C DX51D

SGCC JAC270C 　 DX52D

SGCD1 JAC270D DX53D

SGCD2 　　　

SGCD3 JAC270E DDS A DX54D

SGCD4 JAC270F EDDS DX56D

Bake-hardening Steel

JAC270H 　 HX180BD

JAC340H 　 HX220BD

Deep-drawing Steel

JAC340P 　 HX220YD,HX220PD

　 HX260YD

JAC440P 　 HX300YD

High Strength Steel

JAC340W 　　

JAC390W 　　

JAC440W 　　

High Yield Ratio Steel

HX260LAD

　　 HX300LAD

SGC 440 HX340LAD

JAC440R HSLAS50(340)

HX380LAD

　 HX420LAD

JAC590R

Low YieldRatio Steel

JAC590Y 　 HDT600X

JAC780Y 　 HDT780X

JAC980Y 　 HDT980X

Structure Steel

　 SS 33(230) S220GD

SGC340 　 SS 37(255)

SGC400 　 SS 40(275)　 S280GD

SGC490 　

Note : The grades of these specifi cations are similar, not the same in the above table

COMPAR

ISON O

F SPECIFIC

ATION


76

3636

ORDER

ING IN

FORMATIO

N

Required Ordering Data Example

1

Specification (Name, Number, Grade)

JIS G3302 SGCC ZSBX UE

Coating Type ZZ(GI), ZF(GA)

Coating Thickness Z08, Z12, F06, F08⋯etc.

Chemically Treatment Type M, C, P, NC

Surface Quality

General (GP)

Exposed (GE)

Unexposed (UE)

2 Oiling Unoiled

3 Dimensions (Thickness × Width × Length (or coil)) 1.0mm×1219mm×Coil

4 Coil size (Inside Dimensions, Outside Dimensions) ID 508mm，OD 1650mm max.

5 MassMax. Mass 10t max.

Order Mass 45t

6 Application and Fabrication Methods Welded Pipe

7 Special Requirements (if Required) HRB 55max.

(1) The contents of this catalog are for reference only, customers are urged to consult the specifi cations published by the corresponding Associations.

(2) Information of the available steel grades, sizes, marking and packing as shown herein may be updated without notice to comply with actual production situations.

(3) We invite you to contact our Head Offi ce should you have any questions concerning steel specifi cations or ordering requirements.

Phone number are listed below for your convenience. Numbers of our international Offi ces are shown on the back cover.

1.Sales servicesCHINA STEEL GLOBAL TRADING CORPORATION Address：10F, NO.88, Cheng gong 2nd Rd, Qian zhen, Kaohsiung 80661 Taiwan, Republic of China.

Tel：886-7-3322168　　Fax：886-7-3356411　　E-mail：[email protected]

CSGT JAPAN CO., LTD. Address：2F, Osaka U2 Bldg., 4-7 Uchihonmachi 2-Chome,Chuoku, Osaka 540-0026, Japan

Tel：002-81-6-69100850　　Fax：002-81-6-69100851　　E-mail：[email protected]

CSGT HONG KONG LIMITED Address：ROOM 1407,14/F, WORLD WIDE HOUSE, 19 DES VOEUX ROAD, CENTRAL, HONG KONG

Tel：852-25231488　　Fax：852-25234748　　E-mail：[email protected]

CSGT (SHANGHAI) CO.,LTD.Address：21F, NO.1468 NAN JING WEST RD., SHANGHAI 200040

Tel：86-21-62896898　　Fax：86-21-62896678　　E-mail：[email protected]

CSGT (SINGAPORE) PTE, LTD.Address：#14-01, MAS BUILDING, 10 SHENTON WAY SINGAPORE 079117

Tel：65-62238777~8　　Fax：65-62256054 　　E-mail：[email protected]

2.Metallurgical DepartmentTechnical Service Section-Metallurgy：886-7-8021335

Metallurgical Specification and Testing Section：886-7-8021111 Ext. 5797

For prompt and proper processing of your inquiries and orders, please furnish com

plete details of items as

shown in the box below. Please feel free to call C

SC's Sales O

ffi ces or Metallurgical D

epartment, if you need any

information about C

SC's products or services.


77


78

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