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ICS 77.120.40

Nickelknetlegierungen mit Molybdän und Chrom –Zusammensetzung

In keeping with current practice in standards published by the International Organization for Standardization(ISO), a comma has been used throughout as the decimal marker.

Ref. No. DIN 17744 : 2002-09English price group 06 Sales No. 0006

03.03

DEUTSCHE NORM September 2002

17744{

© No part of this translation may be reproduced without the prior permission ofDIN Deutsches Institut für Normung e.V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).

Translation by DIN-Sprachendienst.In case of doubt, the German-language original should be consulted as the authoritative text.

Wrought nickel-chromium-molybdenum alloysChemical composition

Continued on pages 2 to 5.

SupersedesFebruary 1983 edition.

ForewordThis standard has been prepared by the Normenausschuss Nichteisenmetalle (Nonferrous Metals StandardsCommittee), Technical Committee Nickelwerkstoffe.See Other relevant standards for further standards covering the composition of nickel alloys.

AmendmentsThis standard differs from the February 1983 edition in that it has been revised in form and substance (withthe chemical composition being updated), two grades have been dropped and 13 grades have been in-cluded.

Previous editionsDIN 17744: 1973-01, 1983-02.

1 ScopeThis standard specifies the chemical composition of wrought nickel-chromium-molybdenum alloys as usedfor semi-finished products and provides information about the forms normally supplied.

ContentsPage

1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Chemical composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Forms supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Chemical analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Rounding of results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Other relevant standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Copyright Deutsches Institut Fur Normung E.V. Provided by IHS under license with DIN

Not for ResaleNo reproduction or networking permitted without license from IHS

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DIN 17744 : 2002-09

2 Normative referencesThis standard incorporates, by dated or undated reference, provisions from other publications. These norma-tive references are cited at the appropriate places in the text and the titles of the publications are listed below.For dated references, subsequent amendments to or revisions of any of these publications apply to thisstandard only when incorporated in it by amendment or revision. For undated references, the latest edition ofthe publication referred to applies.

DIN 17750 Nickel and wrought nickel alloy sheet, plate and strip – Requirements and testingDIN 17751 Nickel and wrought nickel alloy pipes and tubes – Requirements and testingDIN 17752 Nickel and wrought nickel alloy bars and rod – Requirements and testingDIN 17753 Nickel and wrought nickel alloy wire – Requirements and testingDIN EN 10095 Heat resisting steels and nickel alloysISO 31-0 : 1992 Quantities and units – Part 0: General principles

3 DesignationWrought nickel-chromium-molybdenum alloys shall be designated using either the name of the grade or itsmaterial number.EXAMPLE:Designation of a grade NiMo28 nickel alloy (material number: 2.4617):

Nickel DIN 17744 – NiMo28

or

Nickel DIN 17744 – 2.4617

4 Chemical compositionThe chemical composition of wrought nickel-chromium-molybdenum alloys shall be as specified in table 1.

5 Forms suppliedWrought nickel-chromium-molybdenum alloys may be supplied in the forms specified in table 2, with the semi-finished products conforming to DIN 17750 (sheet, plate and strip), DIN 17751 (pipes and tubes), DIN 17752(bars and rod), or DIN 17753 (wire).

6 Chemical analysisThe analytical method used to establish the chemical composition shall be at the manufacturer’s discretion. Incases of doubt, the latest method is to be used.When expressing the result, the rules given in clause 7 are to be followed.

7 Rounding of resultsRounding of results obtained from the chemical analysis (by measurement or calculation) shall be based onAnnex B of ISO 31-0. Rounding shall be carried out in a single stage to the same number of places as is givenin table 1.The following rules are to be complied with:

a) if the figure after the last decimal place to which the value is to be expressed is less than 5, this figureshall be deleted;b) if the figure after the last decimal place to which the value is to be expressed is 5 or higher, the figure isto be deleted and the last decimal place shall be increased by 1.



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DIN 17744 : 2002-09

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DIN 17744 : 2002-09

Table 2: Forms of nickel alloys supplied

Nickel grade

Name Materialnumber

Application Strip Sheet,plate

Pipes,tubes

Bars,rod Wire Forgings

Corrosion-resistantcomponents

Highly heat-resistantcomponents








Heat and highlycorrosion-resistantcomponents


NOTE: There are no DIN Standards specifying the products marked (X). The properties of products marked Xare dealt with in the standards given in clause 5.



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DIN 17744 : 2002-09

Other relevant standardsDIN 17740 Wrought nickel – Chemical compositionDIN 17741 Low-alloy wrought nickel alloys – Chemical compositionDIN 17742 Wrought nickel-chromium alloys – Chemical compositionDIN 17743 Wrought nickel-copper alloys – Chemical compositionDIN 17745 Wrought nickel-iron alloys – Chemical composition



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