ISO 13887:2017

Steel sheet, cold-reduced, of higher yield strength with improved formability

ISO 13887:2017 is applicable to all grades of cold-reduced steel sheet of higher yield strength with improved formability. The steel is made according to fine-grain practice and has a suitable chemical composition to provide improved formability. The product is intended for the fabrication of parts requiring better formability. It is generally used in the delivered condition. ISO 13887:2017 does not apply to steels designated as commercial quality or drawing quality (see ISO 3574), steels of structural quality (see ISO 4997) or steels of high tensile strength and low yield point with improved formability (see ISO 14590).

Tôles laminées à froid en acier à limite d'élasticité et aptitude au formage accrues

General Information

• Status: Published
• Publication Date: 30-Oct-2017
• ICS: 77.140.50 - Flat steel products and semi-products
• Technical Committee: ISO/TC 17/SC 12 - Continuous mill flat rolled products
• Drafting Committee: ISO/TC 17/SC 12 - Continuous mill flat rolled products
• Current Stage: 9093 - International Standard confirmed
• Start Date: 06-Mar-2023
• Completion Date: 13-Dec-2025

Relations

• Revises: ISO 13887:2011 - Cold-reduced steel sheet of higher yield strength with improved formability
• Effective Date: 21-Nov-2015

Overview

ISO 13887:2017 specifies requirements for cold‑reduced steel sheet of higher yield strength with improved formability. It covers production, chemical composition, mechanical properties, surface condition, dimensional tolerances and testing for steel sheet intended for fabrication of parts requiring enhanced formability. Typical product forms are coils and cut lengths (thicknesses from 0.25 mm to 3.2 mm, widths 600 mm and over). The standard is normally used for material in the delivered condition and excludes commercial/drawing quality, structural quality and certain high‑tensile/low‑yield steels.

Key topics and technical requirements

• Grades and chemistry: Defined grades (e.g., 260Y, 300Y, 340Y, 380Y, 420Y, 490Y, 550Y) with maximum limits for C, Mn, S and Si. Additional alloying elements (Cu, Ni, Cr, Mo, Nb, V, Ti) have specified limits and sum constraints for heat and product analyses.
• Mechanical properties: Minimum lower yield strength, tensile strength and elongation requirements are specified per grade (values given for representative gage lengths). Users can request mechanical property reports at shipment.
• Manufacturing practice: Steelmaking and fine‑grain practice are left to the manufacturer unless otherwise agreed; heat analysis and product analysis requirements are defined.
• Testing and sampling: Tensile testing is performed per ISO 6892‑1. One representative transverse sample per lot (≤50 t) is taken; transverse specimens are taken midway between centre and edge of the sheet as rolled.
• Surface and finish: Matte (dull) finish typical; surface condition requirements differ for exposed vs unexposed parts. Oiling is typically applied for rust protection but is removable and not a forming lubricant.
• Weldability: Generally weldable with suitable procedures; however, spot welding becomes more difficult as carbon increases above ~0.15% and grades 490/550 are not recommended for welding due to reduction in strength by welding heat.
• Dimensional tolerances and coil size: Dimensional and shape tolerances referenced to ISO 16162; coil sizes and marking requirements are specified.

Applications and users

ISO 13887 is relevant to:

• Automotive and appliance manufacturers needing higher‑strength, formable cold‑reduced sheet for stamped parts
• Steel producers, mill quality control and metallurgists specifying production and heat analysis
• Fabricators, stampers and welders requiring documented mechanical and surface properties
• Procurement, inspection and standards compliance teams verifying material acceptance

Practical benefits include weight reduction through higher strength combined with improved formability and predictable mechanical and surface performance for forming applications.

Related standards

• ISO 6892‑1 - Tensile testing (room temperature)
• ISO 16162 - Dimensional and shape tolerances for cold‑rolled sheet
• ISO 3574, ISO 4997, ISO 14590 - Standards referenced for excluded steel categories

Keywords: ISO 13887, cold‑reduced steel sheet, higher yield strength, improved formability, steel grades, mechanical properties, chemical composition, tensile test, weldability, surface finish.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 13887
Fourth edition
2017-10
Steel sheet, cold-reduced, of higher
yield strength with improved
formability
Tôles laminées à froid en acier à limite d'élasticité et aptitude au
formage accrues
Reference number
©
ISO 2017
© ISO 2017, 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. [phone]
Fax [phone]
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www.iso.org
ii © ISO 2017 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Dimensions . 1
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 . 3
5.5 Application . 4
5.6 Weldability . 4
5.7 Surface condition . 4
5.8 Surface finish . 4
5.9 Oiling . 4
5.10 Dimensional and shape tolerances . 4
6 Sampling — Tensile test . 4
7 Test methods — Tensile test . 4
8 Retests . 5
8.1 Machining and flaws. 5
8.2 Elongation . 5
8.3 Additional tests . 5
9 Resubmission . 5
10 Workmanship . 5
11 Inspection and tests . 5
12 Coil size . 6
13 Marking . 6
14 Information to be supplied by the purchaser. 6
Bibliography . 7
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
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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, Steel, Subcommittee SC 12, Continuous
mill flat rolled products.
This fourth edition cancels and replaces the third edition (ISO 13887:2011), which has been technically
revised.
iv © ISO 2017 – All rights reserved

Introduction
With the combination of higher strength and improved formability derived from the tests outlined in
this document, it is possible to obtain savings in mass along with better weldability.
References [4] and [5] may be reviewed for comparison with this document. The relationship between
the standards might only be approximate; therefore, the respective standards should be consulted
for actual requirements. Those who use these documents will need to determine which specifications
address their needs.
INTERNATIONAL STANDARD ISO 13887:2017(E)
Steel sheet, cold-reduced, of higher yield strength with
improved formability
1 Scope
This document is applicable to all grades of cold-reduced steel sheet of higher yield strength with
improved formability. The steel is made according to fine-grain practice and has a suitable chemical
composition to provide improved formability. The product is intended for the fabrication of parts
requiring better formability. It is generally used in the delivered condition.
This document does not apply to steels designated as commercial quality or drawing quality (see
ISO 3574), steels of structural quality (see ISO 4997) or steels of high tensile strength and low yield
point with improved formability (see ISO 14590).
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 16162, Cold-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 terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
cold-reduced steel sheet
product obtained from hot-rolled descaled steel sheet by cold-reducing to the required sheet thickness
followed by annealing to recrystallize the grain structure
3.2
lot
up to a specified quantity of steel sheet of the same designation rolled to the same thickness
4 Dimensions
Cold-reduced steel sheet of higher yield strength with improved formability is produced in thicknesse
...