EN ISO 6931-1:2020

Stainless steels for springs - Part 1: Wire (ISO 6931-1:2016)

ISO 6931-1:2016 specifies the grades of stainless steels which are generally used in the cold drawn condition in the form of wire of circular cross-section up to 10,00 mm in diameter, for the production of springs and spring parts exposed to corrosive effects and sometimes to slightly increased temperatures (see Annex A).
Certain steel grades covered by ISO 16143‑2 are also used for springs, although to a much lesser extent. In these cases, the mechanical properties (tensile strength, etc.) will be agreed between purchaser and supplier. Similarly, diameters between 10,00 mm and 15,00 mm can be ordered according to the specifications of this part of ISO 6931, in which case the parties will agree upon the required mechanical characteristics.
In addition to the specifications of this part of ISO 6931, the general technical delivery requirements of ISO 404 are applicable.

Nichtrostende Stähle für Federn - Teil 1: Draht (ISO 6931-1:2016)

Dieser Teil der ISO 6931 gilt für die nichtrostenden Stähle, die üblicherweise im kaltgezogenen Zustand in Form von Draht mit kreisförmigem Querschnitt bis 10,00 mm Durchmesser für die Fertigung von Federn und federnden Teilen, die korrosiven Einflüssen und mitunter leicht erhöhten Temperaturen (siehe Anhang A) ausgesetzt sind, verwendet werden.
Einige Sorten nach ISO 16143-2, werden auch für Federn verwendet, allerdings in wesentlich geringerem Umfang. In diesen Fällen sind die mechanischen Eigenschaften (Zugfestigkeit usw.) zwischen Besteller und Lieferer zu vereinbaren. Ähnlich können Durchmesser zwischen 10,00 mm und 15,00 mm nach diesem Teil der ISO 6931 bestellt werden; in diesem Falle müssen die Beteiligten die benötigten mechanischen Eigenschaften vereinbaren.
Zusätzlich zu diesem Teil der ISO 6931 gelten die allgemeinen technischen Lieferbedingungen nach ISO 404.

Aciers inoxydables pour ressorts - Partie 1: Fils (ISO 6931-1:2016)

La présente partie de l'ISO 6931 spécifie les nuances d'acier inoxydable qui sont habituellement utilisées à l'état tréfilé à froid sous forme de fils de section transversale circulaire d'un diamètre pouvant atteindre 10,00 mm, destinés à la fabrication de ressorts et de parties de ressorts soumis à des effets corrosifs et parfois à des températures moyennement élevées (voir Annexe A).
Certaines des nuances d'acier couvertes par l'ISO 16143‑2 sont également utilisées dans une moindre mesure pour la fabrication de ressorts. Dans ces cas, les caractéristiques mécaniques (résistance à la traction, etc.) feront l'objet d'un accord entre l'acheteur et le producteur. De la même manière, il est possible de commander des fils dont les diamètres sont compris entre 10,00 mm et 15,00 mm, sur la base des spécifications de la présente partie de l'ISO 6931; dans ce cas, les parties s'entendront sur les caractéristiques mécaniques requises.
Outre les spécifications de la présente partie de l'ISO 6931, les conditions techniques générales de livraison de l'ISO 404 sont applicables.

Nerjavno jeklo za vzmeti - 1. del: Žica (ISO 6931-1:2016)

General Information

• Status: Published
• Publication Date: 01-Sep-2020
• Withdrawal Date: 30-Mar-2021
• ICS: 77.140.25 - Spring steels
• Technical Committee: ECISS/TC 106 - Wire rod and wires
• Drafting Committee: ECISS/TC 106 - Wire rod and wires
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 02-Sep-2020
• Completion Date: 02-Sep-2020
• Ref Project: SIST EN ISO 6931-1:2020 - Stainless steels for springs - Part 1: Wire (ISO 6931-1:2016)

Relations

• Replaces: EN 10270-3:2011 - Steel wire for mechanical springs - Part 3: Stainless spring steel wire
• Effective Date: 09-Sep-2020

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2020
Nadomešča:
SIST EN 10270-3:2012
Nerjavno jeklo za vzmeti - 1. del: Žica (ISO 6931-1:2016)
Stainless steels for springs - Part 1: Wire (ISO 6931-1:2016)
Nichtrostende Stähle für Federn - Teil 1: Draht (ISO 6931-1:2016)
Aciers inoxydables pour ressorts - Partie 1: Fils (ISO 6931-1:2016)
Ta slovenski standard je istoveten z: EN ISO 6931-1:2020
ICS:
77.140.25 Vzmetna jekla Spring steels
77.140.65 Jeklene žice, jeklene vrvi in Steel wire, wire ropes and
verige link chains
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 6931-1
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2020
EUROPÄISCHE NORM
ICS 77.140.25 Supersedes EN 10270-3:2011
English Version
Stainless steels for springs - Part 1: Wire (ISO 6931-
1:2016)
Aciers inoxydables pour ressorts - Partie 1: Fils (ISO Nichtrostende Stähle für Federn - Teil 1: Draht (ISO
6931-1:2016) 6931-1:2016)
This European Standard was approved by CEN on 19 July 2020.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6931-1:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 6931-1:2016 has been prepared by Technical Committee ISO/TC 17 "Steel” of the
International Organization for Standardization (ISO) and has been taken over as EN ISO 6931-1:2020 by
Technical Committee CEN/TC 459/SC 6 “Wire rod and wires” the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2021, and conflicting national standards shall
be withdrawn at the latest by March 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 10270-3:2011.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 6931-1:2016 has been approved by CEN as EN ISO 6931-1:2020 without any
modification.
INTERNATIONAL ISO
STANDARD 6931-1
Third edition
2016-05-15
Stainless steels for springs —
Part 1:
Wire
Aciers inoxydables pour ressorts —
Partie 1: Fils
Reference number
ISO 6931-1:2016(E)
©
ISO 2016
ISO 6931-1:2016(E)
© ISO 2016, 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
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Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2016 – All rights reserved

ISO 6931-1:2016(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Information to be supplied by the purchaser. 2
4 Requirements . 2
4.1 Manufacturing process. 2
4.2 Form of delivery . 2
4.3 Surface finish . 2
4.4 Chemical composition . 2
4.5 Mechanical properties . 3
4.6 Technological properties . 6
4.6.1 Coiling test . 6
4.6.2 Wrapping test . 6
4.6.3 Simple bend test . 6
4.7 Supply conditions of wire on coils/reels and spools . 6
4.7.1 General. 6
4.7.2 Coil size . 6
4.7.3 Circular wire cast . 7
4.7.4 Helix cast of wire . 7
4.8 Surface quality . 8
4.9 Inner soundness . 8
4.10 Dimensions and dimensional tolerances . 8
4.10.1 Tolerances on diameter . . 8
4.10.2 Out of roundness . . 9
4.10.3 Tolerance on the length of straightened and cut lengths . 9
5 Testing and inspection . 9
5.1 Inspection and inspection documents . 9
5.2 Extent of testing for specific testing .10
5.3 Sampling .12
5.4 Test methods .12
5.4.1 Chemical composition .12
5.4.2 Tensile test .12
5.4.3 Coiling test .12
5.4.4 Wrapping test .12
5.4.5 Simple bend test .12
5.4.6 Reverse torsion test .12
5.4.7 Wire cast .13
5.5 Retests .13
6 Marking and packaging .13
Annex A (informative) Additional information .14
Bibliography .19
ISO 6931-1:2016(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 sha
...