ISO/FDIS 630-4
(Main)Structural steels
Structural steels
Aciers de construction
General Information
RELATIONS
Standards Content (sample)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 630-4
ISO/TC 17/SC 3 Secretariat: AFNOR
Voting begins on: Voting terminates on:
2020-02-24 2020-05-18
Structural steels —
Part 4:
Technical delivery conditions for high-yield-strength
quenched and tempered structural steel plates
Aciers de construction —
Partie 4: Conditions techniques de livraison pour tôles en acier de construction trempé et revenu à haute
limite d'élasticitéICS: 77.140.01
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,
This document is circulated as received from the committee secretariat.
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 630-4:2020(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 2020
---------------------- Page: 1 ----------------------
ISO/DIS 630-4:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
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
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/DIS 630-4:2020(E)
Contents Page
Foreword ........................................................................................................................................................................................................................................iv
1 Scope ................................................................................................................................................................................................................................. 1
2 Normative references ...................................................................................................................................................................................... 1
3 Terms and definitions ..................................................................................................................................................................................... 1
4 Classification and designation ............................................................................................................................................................... 2
4.1 Classification ............................................................................................................................................................................................. 2
4.2 Designation (grades and qualities) ....................................................................................................................................... 2
4.3 Normative annexes .............................................................................................................................................................................. 2
5 Information to be supplied by the purchaser......................................................................................................................... 2
5.1 Mandatory information ................................................................................................................................................................... 2
5.2 Options ........................................................................................................................................................................................................... 2
6 Requirements .......................................................................................................................................................................................................... 3
6.1 Steelmaking process ........................................................................................................................................................................... 3
6.2 Delivery condition ................................................................................................................................................................................ 3
6.3 Chemical composition ...................................................................................................................................................................... 3
6.3.1 Heat analysis ...................................................................... .................................................................................................. 3
6.3.2 Product analysis ............................................................................................................................................................... 3
6.3.3 Carbon equivalent value ............................................................................................................................................ 3
6.4 Mechanical properties ...................................................................................................................................................................... 3
6.4.1 Tensile properties ........................................................................................................................................................... 3
6.4.2 Charpy V‑notch impact properties ................................................................................................................... 3
6.5 Surface condition .................................................................................................................................................................................. 3
6.6 Internal soundness .............................................................................................................................................................................. 3
6.7 Dimensions, tolerances on dimensions and shape, mass................................................................................... 4
7 Inspection .................................................................................................................................................................................................................... 4
8 Sampling – Frequency of testing .......................................................................................................................................................... 4
8.1 Verification ................................................................................................................................................................................................. 4
8.2 Test units ...................................................................................................................................................................................................... 4
8.2.1 Annex A .................................................................................................................................................................................... 4
8.2.2 Annex B .................................................................................................................................................................................... 4
9 Test methods ............................................................................................................................................................................................................. 4
10 Marking .......................................................................................................................................................................................................................... 4
Annex A (normative) Steel grades S460Q, S500Q, S550Q, S620Q, S690Q, S890Q and S960Q:
Chemical composition and mechanical properties .......................................................................................................... 5
Annex B (normative) Steel grades SG460Q, SG500Q, and SG700Q: Chemical composition
and mechanical properties ........................................................................................................................................................................ 8
Bibliography .............................................................................................................................................................................................................................10
© ISO 2020 – All rights reserved iii---------------------- Page: 3 ----------------------
ISO/DIS 630-4:2020(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 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 the following
URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 17, Steels, Subcommittee SC 3, Steels for
construction purposes.This second edition cancels and replaces the first edition (ISO 630‑4:2012), which has been technically
revised.The main changes compared to the previous edition are as follows:
— modification of the title to integrate wide flats;
— integration of wide flats in the text;
— applicable thickness ranges have been added in the scope;
— extension of applicable thicknesses for S890Q and S960Q;
— addition of quality F for grade S960Q;
— additional terms and definitions concerning heat treatments have been deleted because ISO 4885 is
in normative references of ISO 630‑1;— list of options has been updated as part has been integrated in ISO 630‑1;
— the formula for CEV has been deleted because given in ISO 630‑1;
— test units have been updated;
— in Tables, the designation concerning thickness have been changed into “nominal thickness”;
— order of listing chemical elements has been updated for grades of Annex A in accordance with
ISO 6306;— the content of the document has been updated to harmonize with all parts of ISO 630.
iv © ISO 2020 – All rights reserved---------------------- Page: 4 ----------------------
ISO/DIS 630-4:2020(E)
A list of all parts in the ISO 630 series can be found on the ISO website.
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.© ISO 2020 – All rights reserved v
---------------------- Page: 5 ----------------------
DRAFT INTERNATIONAL STANDARD ISO/DIS 630-4:2020(E)
Structural steels —
Part 4:
Technical delivery conditions for high-yield-strength
quenched and tempered structural steel plates
1 Scope
This document specifies qualities for high‑yield‑strength quenched and tempered structural steels. It
applies to steel plates and wide flats rolled on a reversing mill which are used in the quenched and
tempered condition and normally intended for welded or bolted structures.This document covers 10 grades and 5 qualities. Grades S460Q, S500Q, S550Q, S620Q, S690Q, S890Q
and S960Q are covered in Annex A. Grades SG460Q, SG500Q, and SG700Q are covered in Annex B. Not
all grades are available in all qualities, and some qualities have Charpy V‑notch requirements.
The steels specified in this document are applicable to hot‑rolled flat products with a minimum nominal
thickness of 3 mm and a maximum nominal thickness of 200 mm for grades S460Q, S500Q, S550Q,
S620Q and S690Q, a maximum nominal thickness of 125 mm for grades S890Q and S960Q, a maximum
nominal thickness of 100 mm for grades SG460Q and SG500Q and a maximum nominal thickness of 150
mm for grade SG700Q.This document does not include the following structural steels, some of which are covered by other
International Standards:— Sheet and strip — refer to ISO TC 17/SC 12, Continuous mill flat rolled products;
— Tubular products — refer to ISO TC 5/SC 1, Steel tubes.NOTE 1 Lists of standards covered by ISO/TC 17/SC 12 and ISO/TC 5/SC 1 are available on the ISO Web site.
NOTE 2 In all parts of ISO 630, the term of "thickness" is considered as "nominal thickness", unless
otherwise stated.2 Normative references
The follow
...
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 630-4
ISO/TC 17/SC 3
Structural steels —
Secretariat: AFNOR
Voting begins on:
Part 4:
2020-12-29
Technical delivery conditions for
Voting terminates on:
high-yield-strength quenched and
2021-02-23
tempered structural steel plates
Aciers de construction —
Partie 4: Conditions techniques de livraison pour tôles en acier de
construction trempé et revenu à haute limite d'élasticité
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 630-4:2020(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 2020
---------------------- Page: 1 ----------------------
ISO/FDIS 630-4:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
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 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/FDIS 630-4:2020(E)
Contents Page
Foreword ........................................................................................................................................................................................................................................iv
1 Scope ................................................................................................................................................................................................................................. 1
2 Normative references ...................................................................................................................................................................................... 1
3 Terms and definitions ..................................................................................................................................................................................... 1
4 Classification and designation ............................................................................................................................................................... 2
4.1 Classification ............................................................................................................................................................................................. 2
4.2 Designation (grades and qualities) ....................................................................................................................................... 2
4.3 Normative annexes .............................................................................................................................................................................. 2
5 Information to be supplied by the purchaser......................................................................................................................... 2
5.1 Mandatory information ................................................................................................................................................................... 2
5.2 Options ........................................................................................................................................................................................................... 2
6 Requirements .......................................................................................................................................................................................................... 3
6.1 Steelmaking process ........................................................................................................................................................................... 3
6.2 Delivery condition ................................................................................................................................................................................ 3
6.3 Chemical composition ...................................................................................................................................................................... 3
6.3.1 Heat analysis ...................................................................... .................................................................................................. 3
6.3.2 Product analysis ............................................................................................................................................................... 3
6.3.3 Carbon equivalent value ............................................................................................................................................ 3
6.4 Mechanical properties ...................................................................................................................................................................... 3
6.4.1 Tensile properties ........................................................................................................................................................... 3
6.4.2 Charpy V‑notch impact properties ................................................................................................................... 3
6.5 Surface condition .................................................................................................................................................................................. 3
6.6 Internal soundness .............................................................................................................................................................................. 3
6.7 Dimensions, tolerances on dimensions and shape, mass................................................................................... 4
7 Inspection .................................................................................................................................................................................................................... 4
8 Sampling – Frequency of testing .......................................................................................................................................................... 4
8.1 Verification ................................................................................................................................................................................................. 4
8.2 Test units ...................................................................................................................................................................................................... 4
8.2.1 Annex A .................................................................................................................................................................................... 4
8.2.2 Annex B .................................................................................................................................................................................... 4
9 Test methods ............................................................................................................................................................................................................. 4
10 Marking .......................................................................................................................................................................................................................... 4
Annex A (normative) Steel grades S460Q, S500Q, S550Q, S620Q, S690Q, S890Q and S960Q:
Chemical composition and mechanical properties .......................................................................................................... 5
Annex B (normative) Steel grades SG460Q, SG500Q, and SG700Q: Chemical composition
and mechanical properties .....................................................................................................................................................................12
Bibliography .............................................................................................................................................................................................................................14
© ISO 2020 – All rights reserved iii---------------------- Page: 3 ----------------------
ISO/FDIS 630-4:2020(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 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 the following
URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 17, Steels, Subcommittee SC 3, Steels for
construction purposes.This second edition cancels and replaces the first edition (ISO 630‑4:2012), which has been technically
revised. The main changes compared to the previous edition are as follows:— modification of the title to integrate wide flats;
— integration of wide flats in the text;
— applicable thickness ranges have been added in the scope;
— extension of applicable thicknesses for S890Q and S960Q;
— addition of quality F for grade S960Q;
— additional terms and definitions concerning heat treatments have been deleted because ISO 4885 is
in normative references of ISO 630‑1;— list of options has been updated as part has been integrated in ISO 630‑1;
— the formula for CEV has been deleted because given in ISO 630‑1;
— test units have been updated;
— in Tables, the designation concerning thickness have been changed into “nominal thickness”;
— order of listing chemical elements has been updated for grades of Annex A in accordance with
ISO 6306;— the content of the document has been updated to harmonize with all parts of ISO 630.
A list of all parts in the ISO 630 series can be found on the ISO website.iv © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
ISO/FDIS 630-4:2020(E)
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.© ISO 2020 – All rights reserved v
---------------------- Page: 5 ----------------------
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 630-4:2020(E)
Structural steels —
Part 4:
Technical delivery conditions for high-yield-strength
quenched and tempered structural steel plates
1 Scope
This document specifies qualities for high‑yield‑strength quenched and tempered structural steels. It
applies to steel plates and wide flats rolled on a reversing mill which are used in the quenched and
tempered condition and normally intended for welded or bolted structures.This document covers 10 grades and 5 qualities. Grades S460Q, S500Q, S550Q, S620Q, S690Q, S890Q
and S960Q are covered in Annex A. Grades SG460Q, SG500Q, and SG700Q are covered in Annex B. Not
all grades are available in all qualities, and some qualities have Charpy V‑notch requirements.
The steels specified in this document are applicable to hot‑rolled flat products with a minimum nominal
thickness of 3 mm and a maximum nominal thickness of 200 mm for grades S460Q, S500Q, S550Q,
S620Q and S690Q, a maximum nominal thickness of 125 mm for grades S890Q and S960Q, a maximum
nominal thickness of 100 mm for grades SG460Q and SG500Q and a maximum nominal thickness of
150 mm for grade SG700Q.This document does not include the following structural steels, some of which are covered by other
International Standards:— Sheet and strip — refer to ISO TC 17/SC 12, Continuous mill flat rolled products;
— Tubular products — refer to ISO TC 5/SC 1, Steel tubes.NOTE 1 Lists of standards covered by ISO/TC 17/SC 12 and ISO/TC 5/SC 1 are available on the ISO Web site.
NOTE 2 In all parts of ISO 630, the term of "thickness" is considered as "nominal thickness", unless
otherwise stated.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 630-1, Structural steels — Part 1: General technical delivery conditions for hot-rolled products
3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 630‑1 and the following apply.
ISO and IEC mainta...
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