ISO 14737:2021
(Main)Carbon and low alloy cast steels for general applications
Carbon and low alloy cast steels for general applications
This document specifies requirements for carbon and low alloy cast steel grades for general applications. NOTE 1 Annex A provides guidance on welding. NOTE 2 Annex B gives information on ISO grade designation and available UNS numbers which are similar to the ISO grade designation.
Aciers moulés au carbone et faiblement alliés d'usage général
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INTERNATIONAL ISO
STANDARD 14737
Third edition
2021-07
Carbon and low alloy cast steels for
general applications
Aciers moulés au carbone et faiblement alliés d'usage général
Reference number
ISO 14737:2021(E)
©
ISO 2021
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ISO 14737:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
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ISO 14737:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General conditions for delivery . 1
5 Chemical composition . 1
6 Heat treatment . 1
7 Mechanical properties . 1
8 Test methods . 2
9 Supplementary requirements . 2
10 Marking . 2
Annex A (informative) Guidance data for welding . 7
Annex B (informative) UNS cast grades similar to ISO cast grades . 8
Bibliography . 9
© ISO 2021 – All rights reserved iii
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ISO 14737:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 11, Steel
castings.
This third edition cancels and replaces the second edition (ISO 14737:2015), which has been technically
revised. The main changes compared to the previous edition are as follows:
— new Note was inserted in the Scope; previous Note 1 for Annex B was renumbered as Note 2;
— “Terms and Definitions” added as new Clause 3; subsequent Clauses were renumbered;
— footnote “a” to limit Cr, Mo, Ni, V, and Cu was added to GE200, GS200, GE240, and GS240 in Table 1.
This makes it consistent with EN 10293;
— correction of thickness, t, for G10MnMoV6-3 in Table 2;
— correction of tempering temperature range for G25NiCrMo2-2.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved
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INTERNATIONAL STANDARD ISO 14737:2021(E)
Carbon and low alloy cast steels for general applications
1 Scope
This document specifies requirements for carbon and low alloy cast steel grades for general applications.
NOTE 1 Annex A provides guidance on welding.
NOTE 2 Annex B gives information on ISO grade designation and available UNS numbers which are similar to
the ISO grade designation.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method
ISO 4990, Steel castings — General technical delivery requirements
ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
4 General conditions for delivery
Steel castings supplied in accordance with this document shall conform to the applicable requirements
of ISO 4990, including the supplementary requirements that are indicated in the inquiry and purchase
order.
5 Chemical composition
The chemical composition shall conform to the values given in Table 1.
6 Heat treatment
The type of heat treatment is left to the discretion of the manufacturer unless otherwise agreed upon at
the time of inquiry and order. Heat treatment described in Table 2 is for information only.
7 Mechanical properties
Mechanical properties are given in Table 2 and are subject to an agreement at the time of inquiry and
order.
© ISO 2021 – All rights reserved 1
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ISO 14737:2021(E)
Unless otherwise specified (see ISO 4990), the thickness of the test block shall be 28 mm minimum.
Properties at thicknesses greater than the maximum thickness in Table 2 may be lower and are subject
to an agreement between manufacturer and purchaser.
8 Test methods
8.1 The tensile test shall be performed in accordance with ISO 6892-1.
8.2 The impact test shall be performed in accordance with ISO 148-1.
9 Supplementary requirements
A list of supplementary requirements which may be used at the option of the purchaser is given in
ISO 4990.
10 Marking
Marking shall be as specified in ISO 4990.
2 © ISO 2021 – All rights reserved
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ISO 14737:2021(E)
© ISO 2021 – All rights reserved 3
Table 1 — Chemical composition, mass fraction in %
Grade desig
...
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 14737
ISO/TC 17/SC 11
Carbon and low alloy cast steels for
Secretariat: ANSI
general applications
Voting begins on:
20210409
Aciers moulés au carbone et faiblement alliés d'usage général
Voting terminates on:
20210604
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
ISO/FDIS 14737:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN
DARDS TO WHICH REFERENCE MAY BE MADE IN
©
NATIONAL REGULATIONS. ISO 2021
---------------------- Page: 1 ----------------------
ISO/FDIS 14737:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/FDIS 14737:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General conditions for delivery . 1
5 Chemical composition . 1
6 Heat treatment . 1
7 Mechanical properties . 1
8 Test methods . 2
9 Supplementary requirements . 2
10 Marking . 2
Annex A (informative) Guidance data for welding . 7
Annex B (informative) UNS cast grades similar to ISO cast grades . 8
Bibliography . 9
© ISO 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/FDIS 14737:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and nongovernmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO's adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
This document was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 11, Steel
castings.
This third edition cancels and replaces the second edition (ISO 14737:2015), which has been technically
revised. The main changes compared to the previous edition are as follows:
— New Note was inserted the Scope; previous Note 1 for Annex B was renumbered as Note 2;
— “Terms and Definitions” added as new Clause 3; subsequent Clauses were renumbered;
— Footnote “a” to limit Cr, Mo, Ni, V, and Cu was added to GE200, GS200, GE240, and GS240 in Table 1.
This makes it consistent with EN 10293;
— Correction of thickness, t, for G10MnMoV63 in Table 2;
— Correction of tempering temperature range for G25NiCrMo22.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 14737:2021(E)
Carbon and low alloy cast steels for general applications
1 Scope
This document specifies requirements for carbon and low alloy cast steel grades for general applications.
NOTE 1 Annex A provides guidance on welding.
NOTE 2 Annex B gives information on ISO grade designation and available UNS numbers which are similar to
the ISO grade designation.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1481, Metallic materials — Charpy pendulum impact test — Part 1: Test method
ISO 4990, Steel castings — General technical delivery requirements
ISO 68921, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
4 General conditions for delivery
Steel castings supplied in accordance with this document shall conform to the applicable requirements of
ISO 4990, including the supplementary requirements that are indicated in the inquiry and purchase order.
5 Chemical composition
The chemical composition shall conform to the values given in Table 1.
6 Heat treatment
The type of heat treatment is left to the discretion of the manufacturer unless otherwise agreed upon at
the time of inquiry and order. Heat treatment described in Table 2 is for information only.
7 Mechanical properties
Mechanical properties are given in Table 2 and are subject to an agreement at the time of inquiry
and order.
Unless otherwise specified (see ISO 4990), the thickness of the test block shall be 28 mm minimum.
© ISO 2021 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO/FDIS 14737:2021(E)
Properties at thicknesses greater than the maximum thickness in Table 2 may be lower and are subject
to an agreement between manufacturer and purchaser.
8 Test methods
8.1 The tensile test shall be performed in accordance with ISO 68921.
8.2 The impact test shall be performed in accordance with ISO 1481.
9 Supplementary requirements
A list of supplementary requirements which may be used at the option of the purchaser is given in
ISO 4990.
10 Marki
...
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