ISO 14737:2015
(Main)Carbon and low alloy cast steels for general applications
Carbon and low alloy cast steels for general applications
ISO 14737:2015 specifies requirements for carbon and low alloy cast steel grades for general applications. NOTE 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
Second edition
2015-12-15
Carbon and low alloy cast steels for
general applications
Aciers moulés au carbone et faiblement alliés d’usage général
Reference number
ISO 14737:2015(E)
©
ISO 2015
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ISO 14737:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
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Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
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ISO 14737:2015(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 General conditions for delivery . 1
4 Chemical composition . 1
5 Heat treatment . 1
6 Mechanical properties . 1
7 Test methods . 1
8 Supplementary requirements . 2
9 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 2015 – All rights reserved iii
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ISO 14737:2015(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 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
The committee responsible for this document is The committee responsible for this document is
ISO/TC 17, Steel, Subcommittee SC 11, Steel castings.
This second edition cancels and replaces the first edition (ISO 14737:2003) and ISO 3755, of which it
constitutes a technical revision. Notably, the following changes have been made to the previous edition:
— carbon has replaced non-alloy in the title of the standard;
— grades G21Mn5 and G50CrMo4 have been deleted;
— Annexes A and B have been replaced;
— new values and grade numbers have been added to Tables 1 and 2 and Annex A.
iv © ISO 2015 – All rights reserved
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INTERNATIONAL STANDARD ISO 14737:2015(E)
Carbon and low alloy cast steels for general applications
1 Scope
This International Standard specifies requirements for carbon and low alloy cast steel grades for
general applications.
NOTE 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, in whole or in part, are normatively referenced in this document and are
indispensable for its application. 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 General conditions for delivery
Steel castings supplied in accordance with this International Standard shall conform to the applicable
requirements of ISO 4990, including the supplementary requirements that are indicated in the inquiry
and purchase order.
4 Chemical composition
The chemical composition shall conform to the values given in Table 1.
5 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. The information for heat treatment described in Table 2 is for
information only.
6 Mechanical properties
Mechanical properties are given in Table 2 and shall be 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.
Properties at thicknesses greater than the maximum thickness in Table 2 may be lower and are subject
to an agreement between manufacturer and purchaser.
7 Test methods
7.1 The tensile test shall be performed in accordance with ISO 6892-1.
© ISO 2015 – All rights reserved 1
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ISO 14737:2015(E)
7.2 The impact test shall be performed in accordance with ISO 148-1.
8 Supplementary requirements
A list of supplementary requirements which may be used at the option of the purchaser is given in
ISO 4990.
9 Marking
Marking shall be as specified in ISO 4990.
2 © ISO 2015 – All rights reserved
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ISO 14737:2015(E)
© ISO 2015 – All rights reserved 3
Table 1 — Chemical composition, % (m/m)
Grade designation
C Si Mn P S Cr Mo Ni V Cu
Name Number
GE 200 1.0420 — — — 0,035 0,030 0,30 0,12 0,40 0,03 0,30
GS 200 1.0449 0,18 0,60 1,20 0,030 0,025 0,30 0,12 0,40 0,03 0,30
GE 240 1.0446 — — — 0,035 0,030 0,30 0,12 0,40 0,03 0,30
GS 240 1.0455 0,23 0,60 1,20 0,030 0,025 0,30 0,12 0,40 0,03 0,30
a a a a a
GS 270 1.0454 0,24 0,60 1,30 0,030 0,025 0,30 0,12 0,40 0,03 0,30
a a a a a
GS 340 1.0467 0,30 0,60 1,50 0,030 0,025 0,30 0,12 0,40 0,03 0,30
G28Mn6 1.1165 0,25 to 0,32 0,60 1,20 to 1,80 0,035 0,030 0,30 0,15 0,40 0,05 0,30
G28MnMo6 1.5433 0,25 to 0,32 0,60 1,20
...
DRAFT INTERNATIONAL STANDARD
ISO/DIS 14737
ISO/TC 17/SC 11 Secretariat: ANSI
Voting begins on: Voting terminates on:
2013-10-03 2014-01-03
Cast non-alloy and low alloy steels for general applications
Aciers moulés non alliés et faiblement alliés pour applications générales
[Revision of first edition (ISO 1�����200�)]
ICS: 77.140.80
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 14737:2013(E)
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 SUPPORTING DOCUMENTATION. ISO 2013
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ISO/DIS 14737:2013(E)
Copyright notice
This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as
permitted under the applicable laws of the user’s country, neither this ISO draft nor any extract
from it may be reproduced, stored in a retrieval system or transmitted in any form or by any means,
electronic, photocopying, recording or otherwise, without prior written permission being secured.
Requests for permission to reproduce should be addressed to either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.
ii © ISO 2013 – All rights reserved
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ISO DIS 14737
Contents Page
Foreword . iv
1 Scope . 1
2 Normative references . 1
3 General conditions for delivery . 1
4 Chemical composition . 1
5 Heat treatment . 1
6 Mechanical properties . 1
7 Test methods . 1
8 Supplementary requirements . 2
9 Marking . 2
Annex A (informative) Guidance data for welding . 7
Annex B (informative) UNS cast grades similar to ISO cast grades . 8
Annex C (informative) Changes to ISO 14737:2003 . 9
© ISO 2011 – All rights reserved iii
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ISO DIS 14737
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 14737 was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 11, Steel castings.
This second edition cancels and replaces the first edition (ISO 14737:2003), which has been technically
revised. This second edition replaces also the second edition of ISO 3755:1991.
iv © ISO 2011 – All rights reserved
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DRAFT INTERNATIONAL STANDARD DIS 14737
Cast non-alloy and low alloy steels for general applications
1 Scope
This International Standard specifies requirements for carbon and low alloy cast steel grades for general
applications.
NOTE Annex C gives information on ISO grade designation and available UNS numbers which are similar to the ISO
grade designation.
2 Normative references
The following referenced documents are indispensable for the application 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 General conditions for delivery
Steel castings supplied in accordance with this International Standard shall conform to the applicable
requirements of ISO 4990, including the supplementary requirements that are indicated in the inquiry and
purchase order.
4 Chemical composition
The chemical composition shall conform to the values given in Table 1.
5 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. The information for heat treatment described in Table 2 is for information only.
6 Mechanical properties
Mechanical properties are given in Table 2 and shall be 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.
Properties at thicknesses greater than the maximum thickness in Table 2 may be lower and are subject to an
agreement between manufacturer and purchaser.
7 Test methods
7.1 Tensile testing shall be performed in accordance with ISO 6892-1.
© ISO 2011 – All rights reserved 1
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ISO DIS 14737
7.2 Impact testing shall be performed in accordance with ISO 148-1.
8 Supplementary requirements
This international standard also specifies a group of supplementary requirements, which may be applied to
steel castings. These requirements are provided for use when additional testing or inspection is desired and
apply only when individually specified by the purchaser.
A list of supplementary requirements which may be used at the option of the purchaser is given in ISO 4990.
9 Marking
Marking shall be as specified in ISO 4990.
2 © ISO 2011 – All rights reserved
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DRAFT INTERNATIONAL STANDARD DIS 14737
c
Table 1 — Steel grades and chemical composition (cast analysis), % by mass
Analyses
Grade designation C Si Mn P S Cr Mo Ni V Cu
Name Number
GE 200 1.0420 - - - 0,035 0,030 - - - - -
GS 200 1.0449 0,18 0,60 1,20 0,030 0,025 - - - - -
GE 240 1.0446 - - - 0,035 0,030 - - - - -
GS 240 1.0455 0,23 0,60 1,20 0,030 0,025 - - - - -
a a a a a
GS 270 1.0454 0,24 0,60 1,30 0,030 0,025
0,30 0,12 0,40 0,03 0,30
a a a a a
GS 340 1.0467 0,30 0,60 1,50 0,030 0,025
0,30 0,12 0,40 0,03 0,30
G21Mn5 1.1138 0,17 to 0,24 0,60 1,10 to 1,30 0.020 0.025 0,30 0,15 0,80 0,05 0,30
G28Mn6 1.1165 0,25 to 0,32 0,60 1,20 to 1,80 0,035 0,030 0,
...
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