Hot-rolled twin-roll cast steel sheet of structural quality and high strength steel

This document specifies the requirements for hot-rolled twin-roll cast steel sheet of structural quality and high strength steel. The product is intended for applications where specific mechanical properties are required. It is generally used in the delivered condition and is intended for bolted, riveted or welded structures, and it is produced on a wide strip mill, not a plate mill. Structural quality twin-roll cast steel sheet is a carbon steel produced to specified mechanical properties and is available in a number of grades. High strength hot-rolled twin-roll cast steel sheet, strengthened by microalloys is produced to specified mechanical properties and is available in a number of grades and classes.

Tôles en acier de construction et en acier à haute résistance laminées à chaud par coulée entre cylindres

General Information

Status
Published
Publication Date
27-Feb-2022
Current Stage
6060 - International Standard published
Start Date
28-Feb-2022
Due Date
26-Oct-2021
Completion Date
28-Feb-2022
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INTERNATIONAL ISO
STANDARD 15179
Second edition
2022-02
Hot-rolled twin-roll cast steel sheet of
structural quality and high strength
steel
Tôles en acier de construction et en acier à haute résistance laminées
à chaud par coulée entre cylindres
Reference number
ISO 15179:2022(E)
© ISO 2022

---------------------- Page: 1 ----------------------
ISO 15179:2022(E)
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.
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 2022 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 15179:2022(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Dimensions .2
5 Conditions of manufacture .2
5.1 Steelmaking . 2
5.2 Chemical composition . 2
5.3 Chemical analysis . 2
5.3.1 Heat analysis . 2
5.3.2 Product analysis . 3
5.4 Mechanical properties . 4
5.5 Application . 5
5.6 Weldability . 5
5.7 Surface condition . 5
5.8 Oiling . 6
5.9 Skin passing . 6
6 Dimensional and shape tolerances. 6
7 Tensile test sampling . 6
8 Tensile test . 6
9 Retests . 6
9.1 Machining and flaws . . 6
9.2 Elongation . 6
9.3 Additional tests . 6
10 Resubmission. 6
11 Workmanship . 7
12 Inspection and acceptance .7
13 Coil size . 7
14 Marking . . 7
15 Information supplied by the purchaser . 8
Bibliography . 9
iii
© ISO 2022 – All rights reserved

---------------------- Page: 3 ----------------------
ISO 15179:2022(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 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 12, Continuous
mill flat rolled products.
This second edition cancels and replaces the first edition (ISO 15179:2012), which has been technically
revised.
The main changes are as follows:
— update of Clause 3;
— modification of the title of Clause 4.
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

---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 15179:2022(E)
Hot-rolled twin-roll cast steel sheet of structural quality
and high strength steel
1 Scope
This document specifies the requirements for hot-rolled twin-roll cast steel sheet of structural quality
and high strength steel.
The product is intended for applications where specific mechanical properties are required. It is
generally used in the delivered condition and is intended for bolted, riveted or welded structures, and it
is produced on a wide strip mill, not a plate mill.
Structural quality twin-roll cast steel sheet is a carbon steel produced to specified mechanical
properties and is available in a number of grades.
High strength hot-rolled twin-roll cast steel sheet, strengthened by microalloys is produced to specified
mechanical properties and is available in a number of grades and classes.
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 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 16160, Hot-rolled steel sheet products — Dimensional and shape tolerances
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology 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
hot-rolled twin-roll cast steel sheet
product resulting from the twin-roll process to obtain the required sheet thickness and tolerances
3.2
hot-rolled twin-roll cast descaled steel sheet
hot-rolled steel sheet from which oxide or scale has been removed, commonly by pickling in an acid
solution
Note 1 to entry: Descaling can also be performed by mechanical methods such as grit blasting. Some change in
properties can result from descaling.
3.3
mill edge
normal side edge without any definite contour produced in hot-rolling
Note 1 to entry: Mill edges can contain some irregularities, such as cracked or torn edges or thin (feathered)
edges.
1
© ISO 2022 – All rights reserved

---------------------- Page: 5 ----------------------
ISO 15179:2022(E)
3.4
sheared edge
normal edge obtained by shearing, slitting, or trimming a mill edge product
Note 1 to entry: Normal processing does not necessarily provide a definite position of the slitting burr.
3.5
twin-roll cast steel sheet
steel sheet produced by casting to near final thickness directly from the liquid metal with minimal hot-
rolling to achieve the final thickness
3.6
skin passing
light cold rolling of the product
Note 1 to entry: The purpose of skin passing is one or more of the following: to minimize the appearance of coil
breaks, stretcher strains and fluting; to control the shape; or to obtain the required surface finish.
Note 2 to entry: Some increase in hardness and some loss in ductility will result from skin passing.
3.7
lot
up to a specified quantity of steel sheet of the same designation rolled to the same thickness and surface
condition
4 Dimensions
4.1 Hot-rolled twin-roll cast steel sheet is commonly produced in thicknesses from 0,7 mm to 2,0 mm
inclusive and in widths of up to 2 000 mm maximum in coils and cut lengths.
4.2 Hot-rolled twin-roll cast steel sheet less than 600 mm wide, slit from wide sheet, is considered as
sheet.
5 Conditions of manufacture
5.1 Steelmaking
Unless otherwise agreed by the interested part
...

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 15179
ISO/TC 17/SC 12
Hot-rolled twin-roll cast steel sheet of
Secretariat: JISC
structural quality and high strength
Voting begins on:
2021-11-10 steel
Voting terminates on:
Tôles en acier de construction et en acier à haute résistance laminées
2022-01-05
à chaud par coulée entre cylindres
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 15179:2021(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 15179:2021(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

---------------------- Page: 2 ----------------------
ISO/FDIS 15179:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Dimensions .2
5 Conditions of manufacture .2
5.1 Steelmaking . 2
5.2 Chemical composition . 2
5.3 Chemical analysis . 2
5.3.1 Heat analysis . 2
5.3.2 Product analysis . 3
5.4 Mechanical properties . 4
5.5 Application . 5
5.6 Weldability . 5
5.7 Surface condition . 5
5.8 Oiling . 6
5.9 Skin passing . 6
6 Dimensional and shape tolerances. 6
7 Tensile test sampling . 6
8 Tensile test . 6
9 Retests . 6
9.1 Machining and flaws . . 6
9.2 Elongation . 6
9.3 Additional tests . 6
10 Resubmission. 6
11 Workmanship . 7
12 Inspection and acceptance .7
13 Coil size . 7
14 Marking . . 7
15 Information supplied by the purchaser . 8
Bibliography . 9
iii
© ISO 2021 – All rights reserved

---------------------- Page: 3 ----------------------
ISO/FDIS 15179:2021(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 12, Continuous
mill flat rolled products.
This second edition cancels and replaces the first edition (ISO 15179:2012), which has been technically
revised.
The main changes are as follows:
— The title of this document has been modified;
— Clause 3 has been updated;
— Title of Clause 4 has been modified.
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 15179:2021(E)
Hot-rolled twin-roll cast steel sheet of structural quality
and high strength steel
1 Scope
This document specifies the requirements for hot-rolled twin-roll cast steel sheet of structural quality
and high strength steel.
The product is intended for applications where specific mechanical properties are required. It is
generally used in the delivered condition and is intended for bolted, riveted or welded structures, and it
is produced on a wide strip mill, not a plate mill.
Structural quality twin-roll cast steel sheet is a carbon steel produced to specified mechanical
properties and is available in a number of grades.
High strength hot-rolled twin-roll cast steel sheet, strengthened by microalloys is produced to specified
mechanical properties and is available in a number of grades and classes.
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 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 16160, Hot-rolled steel sheet products — Dimensional and shape tolerances
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology 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
hot-rolled twin-roll cast steel sheet
product resulting from the twin-roll process to obtain the required sheet thickness and tolerances
3.2
hot-rolled twin-roll cast descaled steel sheet
hot-rolled steel sheet from which oxide or scale has been removed, commonly by pickling in an acid
solution
Note 1 to entry: Descaling can also be performed by mechanical methods such as grit blasting. Some change in
properties can result from descaling.
3.3
mill edge
normal side edge without any definite contour produced in hot-rolling
Note 1 to entry: Mill edges can contain some irregularities, such as cracked or torn edges or thin (feathered)
edges.
1
© ISO 2021 – All rights reserved

---------------------- Page: 5 ----------------------
ISO/FDIS 15179:2021(E)
3.4
sheared edge
normal edge obtained by shearing, slitting, or trimming a mill edge product
Note 1 to entry: Normal processing does not necessarily provide a definite position of the slitting burr.
3.5
twin-roll cast steel sheet
steel sheet produced by casting to near final thickness directly from the liquid metal with minimal hot-
rolling to achieve the final thickness
3.6
skin passing
light cold rolling of the product
Note 1 to entry: The purpose of skin passing is one or more of the following: to minimize the appearance of coil
breaks, stretcher strains and fluting; to control the shape; or to obtain the required surface finish.
Note 2 to entry: Some increase in hardness and some loss in ductility will result from skin passing.
3.7
lot
up to a specified quantity of steel sheet of the same designation rolled to the same thickness and surface
condition
4 Dimensions
4.1 Hot-rolled twin-roll cast steel sheet is commonly prod
...

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