DIN 17744

September 2002

D EUTSCHE NORM

Wrought nickel-chromium-molybdenum alloys

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Chemical composition

17744 Supersedes February 1983 edition.

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.

Contents Page

1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Chemical composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Forms supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Chemical analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Rounding of results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Other relevant standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 2 2 2 2 2 2 5

Foreword This standard has been prepared by the Normenausschuss Nichteisenmetalle (Nonferrous Metals Standards Committee), Technical Committee Nickelwerkstoffe. See Other relevant standards for further standards covering the composition of nickel alloys. Amendments This standard differs from the February 1983 edition in that it has been revised in form and substance (with the chemical composition being updated), two grades have been dropped and 13 grades have been included. Previous editions DIN 17744: 1973-01, 1983-02.

1

Scope

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

Continued on pages 2 to 5.

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

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

Copyright Deutsches Institut Fur Normung E.V. has the exclusive right of sale Provided by IHS under license with DIN No reproduction or networking permitted without license from IHS

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

Sales No. 0006 03.03

Page 2 DIN 17744 : 2002-09

2

Normative references

This standard incorporates, by dated or undated reference, provisions from other publications. These normative 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 this standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. DIN 17750 DIN 17751 DIN 17752 DIN 17753 DIN EN 10095 ISO 31-0 : 1992

3

Nickel and wrought nickel alloy sheet, plate and strip – Requirements and testing Nickel and wrought nickel alloy pipes and tubes – Requirements and testing Nickel and wrought nickel alloy bars and rod – Requirements and testing Nickel and wrought nickel alloy wire – Requirements and testing Heat resisting steels and nickel alloys Quantities and units – Part 0: General principles

Designation

Wrought nickel-chromium-molybdenum alloys shall be designated using either the name of the grade or its material 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 composition

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

5

Forms supplied

Wrought nickel-chromium-molybdenum alloys may be supplied in the forms specified in table 2, with the semifinished 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 analysis

The analytical method used to establish the chemical composition shall be at the manufacturer’s discretion. In cases 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 results

Rounding of results obtained from the chemical analysis (by measurement or calculation) shall be based on Annex B of ISO 31-0. Rounding shall be carried out in a single stage to the same number of places as is given in 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 figure shall 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 is to be deleted and the last decimal place shall be increased by 1.

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Material number

Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

2) 2)

4)

2)

For information only. The titanium and aluminium content shall total 2,4 to 2,8 %. 3 ) It should be noted that DIN EN 10095 specifies slightly different percentages. 4 ) According to DIN EN 10095, the minimum carbon content is to be 0,03 %.

1)

3)

Name

Nickel grade

Other

Other

Other

Other

Percentages by mass

Table 1: Chemical composition of wrought nickel-chromium-molybdenum alloys

2) 2)

Approx. density in g/cm3 1)

Page 3 DIN 17744 : 2002-09

Page 4 DIN 17744 : 2002-09 Table 2: Forms of nickel alloys supplied Nickel grade Name

Material number

Application

Strip

Sheet, plate

Pipes, tubes

Bars, rod

Wire

Forgings

Corrosion-resistant components

Highly heat-resistant components

Corrosion-resistant components

Highly heat-resistant components Corrosion-resistant components

Highly heat-resistant components

Corrosion-resistant components

Highly heat-resistant components Corrosion-resistant components Heat and highly corrosion-resistant components Corrosion-resistant components NOTE: There are no DIN Standards specifying the products marked (X). The properties of products marked X are dealt with in the standards given in clause 5.

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Page 5 DIN 17744 : 2002-09

Other relevant standards Wrought nickel – Chemical composition Low-alloy wrought nickel alloys – Chemical composition Wrought nickel-chromium alloys – Chemical composition Wrought nickel-copper alloys – Chemical composition Wrought nickel-iron alloys – Chemical composition

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DIN 17740 DIN 17741 DIN 17742 DIN 17743 DIN 17745

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