Non-alloy steel wire rod for conversion to wire - Part 4: Specific requirements for wire rod for special applications (ISO 16120-4:2017)

ISO 16120-4:2017 specifies requirements for wire rod for conversion to wire for special applications. It is applicable to non-alloy steel wire rod with improved characteristics intended for drawing and/or cold rolling.

Walzdraht aus unlegiertem Stahl zum Ziehen - Teil 4: Besondere Anforderungen an Walzdraht für Sonderanwendungen (ISO 16120-4:2017)

Dieser Teil der ISO 16120 gilt für Walzdraht mit erhöhten Anforderungen zum Ziehen und/oder Kaltwalzen.

Fil-machine en acier non allié destiné à la fabrication de fils - Partie 4: Exigences spécifiques au fil-machine pour applications spéciales (ISO 16120-4:2017)

ISO 16120-4:2017 spécifie les exigences pour le fil-machine en acier non allié destiné à la fabrication de fils pour applications spéciales. Il est applicable au fil-machine en acier non alliés dont les caractéristiques ont été améliorées, destiné au tréfilage et/ou au laminage à froid.

Valjana žica iz nelegiranega jekla - 4. del: Posebne zahteve za žico za posebne namene (ISO 16120-4:2017)

Ta dokument določa zahteve za valjane žice za posebne namene. Uporablja se za valjane žice iz nelegiranega jekla z izboljšanimi lastnostmi, namenjene za vlečenje in/ali hladno valjanje.

General Information

Status
Published
Publication Date
06-Jun-2017
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
07-Jun-2017
Completion Date
07-Jun-2017

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SLOVENSKI STANDARD
SIST EN ISO 16120-4:2017
01-september-2017
1DGRPHãþD
SIST EN ISO 16120-4:2011
Valjana žica iz nelegiranega jekla - 4. del: Posebne zahteve za žico za posebne
namene (ISO 16120-4:2017)

Non-alloy steel wire rod for conversion to wire - Part 4: Specific requirements for wire rod

for special applications (ISO 16120-4:2017)
Walzdraht aus unlegiertem Stahl zum Ziehen - Teil 4: Besondere Anforderungen an
Walzdraht für Sonderanwendungen (ISO 16120-4:2017)

Fil-machine en acier non allié destiné à la fabrication de fils - Partie 4: Exigences

spécifiques au fil-machine pour applications spéciales (ISO 16120-4:2017)
Ta slovenski standard je istoveten z: EN ISO 16120-4:2017
ICS:
77.140.65 Jeklene žice, jeklene vrvi in Steel wire, wire ropes and
verige link chains
SIST EN ISO 16120-4:2017 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 16120-4:2017
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SIST EN ISO 16120-4:2017
EN ISO 16120-4
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2017
EUROPÄISCHE NORM
ICS 77.140.60 Supersedes EN ISO 16120-4:2011
English Version
Non-alloy steel wire rod for conversion to wire - Part 4:
Specific requirements for wire rod for special applications
(ISO 16120-4:2017)

Fil-machine en acier non allié destiné à la fabrication Walzdraht aus unlegiertem Stahl zum Ziehen - Teil 4:

de fils - Partie 4: Exigences spécifiques au fil-machine Besondere Anforderungen an Walzdraht für

pour applications spéciales (ISO 16120-4:2017) Sonderanwendungen (ISO 16120-4:2017)

This European Standard was approved by CEN on 20 April 2017.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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: Avenue Marnix 17, B-1000 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16120-4:2017 E

worldwide for CEN national Members.
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SIST EN ISO 16120-4:2017
EN ISO 16120-4:2017 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 16120-4:2017
EN ISO 16120-4:2017 (E)
European foreword

This document (EN ISO 16120-4:2017) has been prepared by Technical Committee ISO/TC 17 "Steel" in

collaboration with Technical Committee ECISS/TC 106 “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 December 2017, and conflicting national standards

shall be withdrawn at the latest by December 2017.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent

rights.
This document supersedes EN ISO 16120-4:2011.

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, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 16120-4:2017 has been approved by CEN as EN ISO 16120-4:2017 without any

modification.
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SIST EN ISO 16120-4:2017
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SIST EN ISO 16120-4:2017
INTERNATIONAL ISO
STANDARD 16120-4
Third edition
2017-05
Non-alloy steel wire rod for
conversion to wire —
Part 4:
Specific requirements for wire rod for
special applications
Fil-machine en acier non allié destiné à la fabrication de fils —
Partie 4: Exigences spécifiques au fil-machine pour applications
spéciales
Reference number
ISO 16120-4:2017(E)
ISO 2017
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SIST EN ISO 16120-4:2017
ISO 16120-4:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© 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
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
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SIST EN ISO 16120-4:2017
ISO 16120-4:2017(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Designation ................................................................................................................................................................................................................ 1

5 Requirements .......................................................................................................................................................................................................... 2

5.1 General ........................................................................................................................................................................................................... 2

5.2 Chemical composition and mechanical properties ................................................................................................. 2

5.3 Internal soundness and surface quality ............................................................................................................................ 5

5.4 Depth of surface discontinuities .............................................................................................................................................. 5

5.5 Depth of decarburization ............................................................................................................................................................... 5

5.5.1 General...................................................................................................................................................................................... 5

5.5.2 Complete decarburization ....................................................................................................................................... 5

5.5.3 Partial decarburization .............................................................................................................................................. 6

5.6 Non-metallic inclusions ................................................................................................................................................................... 6

5.7 Core segregation .................................................................................................................................................................................... 6

5.8 Tensile strength ...................................................................................................................................................................................... 6

5.9 Scale characteristics ........................................................................................................................................................................... 7

5.10 Mechanical damage ............................................................................................................................................................................. 7

5.11 Microstructure ........................................................................................................................................................................................ 7

5.11.1 Resolvable pearlite ......................................................................................................................................................... 7

5.11.2 Cementite network ........................................................................................................................................................ 8

Annex A (informative) Steel designations and designation of comparable steel grades ...............................9

Bibliography .............................................................................................................................................................................................................................11

© ISO 2017 – All rights reserved iii
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SIST EN ISO 16120-4:2017
ISO 16120-4:2017(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: w w w . i s o .org/ iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 17, Steel wire

rod and wire products.

This third edition cancels and replaces the second edition (ISO 16120-4:2011), which has been

technically revised.
The main changes compared to the previous edition are:
— Terms and definitions clause added;

— revisions to the permissible variation for ultimate tensile strength of the wire rod (Table 6 and

Table 7);
— cementite network requirement added (5.11.2).
This document is intended to be used in conjunction with ISO 16120-1.
A list of all parts in the ISO 16120 series can be found on the ISO website.
iv © ISO 2017 – All rights reserved
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SIST EN ISO 16120-4:2017
INTERNATIONAL STANDARD ISO 16120-4:2017(E)
Non-alloy steel wire rod for conversion to wire —
Part 4:
Specific requirements for wire rod for special applications
1 Scope

This document specifies requirements for wire rod for conversion to wire for special applications. It is

applicable to non-alloy steel wire rod with improved characteristics intended for drawing and/or cold

rolling.
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 4948-2, Steels — Classification — Part 2: Classification of unalloyed and alloy steels according to main

quality classes and main property or application characteristics

ISO 4967, Steel — Determination of content of non-metallic inclusions — Micrographic method using

standard diagrams

ISO 16120-1:2017, Non-alloy steel wire rod for conversion to wire — Part 1: General requirements

ISO 16120-2:2017, Non-alloy steel wire rod for conversion to wire — Part 2: Specific requirements for

general purpose wire rod
3 Terms and definitions
No terms and definitions are listed in this document.

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
4 Designation

In the designation C##D2, “C” means non-alloy steel (see ISO/TS 4949); ## is the indicative average

content of carbon; “D” signifies that it is for wire-drawing; “2” means wire rod for special applications.

If steels are ordered according to the chemical composition, ## indicates the values to be inserted by

the purchaser according to the steel names as designated in Table 1, first column.

The designations of comparable steel grades in national or regional standards are provided in Annex A.

Steels can also be ordered according to tensile strength. The mid-point of the required ultimate

tensile strength (UTS) range shall be indicated as a suffix to the grade designation, e.g. C##D2 – 1020,

where the required mid-point of the UTS is 1 020 MPa. “##” means “to be left blank” since the carbon

content is at the discretion of the supplying mill, and the supplying mill indicates the exact number of

© ISO 2017 – All rights reserved 1
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SIST EN ISO 16120-4:2017
ISO 16120-4:2017(E)
## based on the
...

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