ISO 19960:2023

TC /SC ISO/TC 17/SC 11
Date: XXXX-XX-XX2022-10-26
ISO/FDIS 19960:2022(E)
TC /SC Secretariat: ANSI
Cast steels and alloys with special physical properties

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ISO 19960:2023
© ISO 2022
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.orgAciers et alliages moulés à propriétés physiques particulières
ii

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ISO/FDIS 19960:2022(E)

Published in Switzerland
© ISO 2022 – All rights reserved iii

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ISO/FDIS 19960:2022(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 onof 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.htmlthe following URL: .
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 19960:2015), which has been editorially
revised with the following of which it constitutes a minor revision. The changes are as follows:
— Terminological databases in the Terms and Definitions were changed.
2
— the unit of N/mm in Table 2 was revised to MPa.;
— GX5Ni36S in Table 4 was corrected to GX5NiS36.
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 2022 – All rights reserved

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FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 19960:2022(E)

Cast steels and alloys with special physical properties
1 Scope
This document specifies cast steel and alloy grades with special physical properties. The cast steel and alloy
grades covered by this document are used in applications which require low linear thermal expansion, or
low ferromagnetic responses, or low galling properties.
NOTE Annex A gives information on ISO grade designation and available UNS numbers which are similar to the ISO
grade designations.
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 4990, Steel castings — General technical delivery requirements
ISO 11970, Specification and approvalqualification of welding procedures for production welding of steel
castings
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminologicalterminology databases for use in standardization at the following
addresses:
· — ISO Online browsing platform: available at https://www.iso.org/obp
· — IEC Electropedia: available at https://www.electropedia.org/
3.1
galling
damage or breaking of the surface by friction or abrasion
4 General conditions for delivery
Materials furnished according to this document shall conform to the applicable requirements of ISO 4990
including the supplementary requirements that are indicated on the enquiry and purchase order.
5 Chemical composition
The cast steel and alloy grades shall conform to the requirements for chemical composition specified in
Table 1.
© ISO 2022 – All rights reserved 1

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ISO/FDIS 19960:2022(E)
6 Mechanical properties
Cast steel and alloy grades shall conform to the mechanical property requirements given in Table 2 up to the
maximum ruling thickness. Verification of impact properties is not required except when indicated by the
customer. Test blocks used to verify the mechanical properties shall not have a thickness exceeding 100 mm.
For blocks taken from castings, the test bar location and the mechanical properties required shall be agreed
between the manufacturer and purchaser.
For grades GX3NiCo32, GX3NiCo29-1
...

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 19960
ISO/TC 17/SC 11
Cast steels and alloys with special
Secretariat: ANSI
physical properties
Voting begins on:
2022-11-09
Aciers et alliages moulés avec caractéristiques physiques particulières
Voting terminates on:
2023-01-04
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 19960:2022(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 2022

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ISO/FDIS 19960:2022(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 19960
ISO/TC 17/SC 11
Cast steels and alloys with special
Secretariat: ANSI
physical properties
Voting begins on:
Aciers et alliages moulés avec caractéristiques physiques particulières
Voting terminates on:
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022
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.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: +41 22 749 01 11
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: copyright@iso.org
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 19960:2022(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2022 – All rights reserved
NATIONAL REGULATIONS. © ISO 2022

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ISO/FDIS 19960:2022(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 Mechanical properties .1
7 Heat treatment .2
8 Welding . 2
9 Verification of physical properties .2
10 Supplementary requirements . 2
Annex A (informative) UNS cast grades similar to ISO cast grades . 6
Bibliography . 7
iii
© ISO 2022 – All rights reserved

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ISO/FDIS 19960:2022(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 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 19960:2015), of which it constitutes a
minor revision. The changes are as follows:
2
— the unit of N/mm in Table 2 was revised to MPa;
— GX5Ni36S in Table 4 was corrected to GX5NiS36.
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 2022 – All rights reserved

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FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 19960:2022(E)
Cast steels and alloys with special physical properties
1 Scope
This document specifies cast steel and alloy grades with special physical properties. The cast steel
and alloy grades covered by this document are used in applications which require low linear thermal
expansion, or low ferromagnetic responses, or lo
...