ISO 17832:2018
(Main)Non-parallel steel wire and cords for tyre reinforcement
Non-parallel steel wire and cords for tyre reinforcement
ISO 17832:2018 specifies the definition and requirements of non-parallel steel wire and cords for tyre reinforcement.
Fils d'acier et cordes non parallèles pour le renfort de pneumatiques
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INTERNATIONAL ISO
STANDARD 17832
Second edition
2018-05
Non-parallel steel wire and cords for
tyre reinforcement
Fils d'acier et cordes non parallèles pour le renfort de pneumatiques
Reference number
©
ISO 2018
© ISO 2018
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 2018 – All rights reserved
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification . 2
4.1 Classification based on tensile strength . 2
4.2 Classification based on cord structure . 3
4.3 Classification based on cord type . 4
5 Designation and ordering . 4
5.1 Cord structure . 4
5.2 Cord tensile strength . 5
5.3 Cord type . 5
5.4 Length and direction of lay . 5
5.5 Coating type . 6
6 Requirements . 6
6.1 General . 6
6.2 Dimensions, mass and tolerances . 6
6.2.1 Diameter of cord . 6
6.2.2 Linear density . 6
6.2.3 Tolerances . 6
6.3 Welds and splices . 6
6.4 Mechanical properties . 7
6.4.1 Breaking load and elongation at fracture . 7
6.4.2 Structural elongation . 7
6.5 Technological properties . 7
6.5.1 Straightness . 7
6.5.2 Arc height . 7
6.5.3 Residual torsion . 7
6.5.4 Flare . 7
6.5.5 Steel cord elasticity . 7
6.5.6 Rubber penetration . 8
6.6 Brass coating . 8
6.6.1 Mass fraction of brass coating . 8
6.6.2 Thickness of coating . 8
6.6.3 Composition of brass . . 8
6.7 Adhesion force . 8
6.8 Constructions and properties . 8
7 Sampling . 9
8 Packing. 9
8.1 General . 9
8.2 Spools . 9
8.3 Packaging .10
Bibliography .18
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, Steel, Subcommittee SC 17, Steel wire
rod and wire products.
This second edition cancels and replaces the first edition (ISO 17832:2009), which has been technically
revised.
The following changes have been made:
— tensile strength for UT, ST and NT constructions has been updated;
— HI construction has been added;
— the tolerance for lay length has been narrowed from “±10 %” to “±5 %”;
— the tolerance of residual torsion for HE construction has been narrowed from ±4 torsion/6 m
to ±3 torsion/6 m;
— the tolerance for spool length has been narrowed;
— the weld breaking load for HT, ST and UT constructions has been increased.
iv © ISO 2018 – All rights reserved
INTERNATIONAL STANDARD ISO 17832:2018(E)
Non-parallel steel wire and cords for tyre reinforcement
1 Scope
This document specifies the definition and requirements of non-parallel steel wire and cords for tyre
reinforcement.
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 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection
ISO 3951-1, Sampling procedures for inspection by variables — Part 1: Specification for single sampling
plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic
and a single AQL
ISO 3951-2, Sampling procedures for inspection by variables — Part 2: General specification for single
sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection of independent quality
characteristics
ISO 3951-3, Sampling procedures for inspection by variables — Part 3: Double sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection
ISO 3951-5, Sampling procedures for inspection by variables — Part 5: Sequential sampling plans indexed
by acceptance quality limit (AQL) for inspection by variables (known standard deviation)
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 https: //www .iso .org/obp
3.1
filament
metal fibre with a metallic alloy coating used as an individual element in a strand (3.2) or cord (3.3)
3.2
strand
group of filaments (3.1) combined together to form a unit product for further processing
3.3
cord
formed structure composed of two or more filaments (3.1) when used as an end product, or a
combination of strands (3.2) or filaments and strands
3.3.1
single-strand cord
cord (3.3) formed by twisting two or more filaments (3.1) together
3.3.2
M+N type cord
cord (3.3) formed by twisting a number of n
...
INTERNATIONAL ISO
STANDARD 17832
Second edition
2018-05
Non-parallel steel wire and cords for
tyre reinforcement
Fils d'acier et cordes non parallèles pour le renfort de pneumatiques
Reference number
©
ISO 2018
© ISO 2018
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 2018 – All rights reserved
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification . 2
4.1 Classification based on tensile strength . 2
4.2 Classification based on cord structure . 3
4.3 Classification based on cord type . 4
5 Designation and ordering . 4
5.1 Cord structure . 4
5.2 Cord tensile strength . 5
5.3 Cord type . 5
5.4 Length and direction of lay . 5
5.5 Coating type . 6
6 Requirements . 6
6.1 General . 6
6.2 Dimensions, mass and tolerances . 6
6.2.1 Diameter of cord . 6
6.2.2 Linear density . 6
6.2.3 Tolerances . 6
6.3 Welds and splices . 6
6.4 Mechanical properties . 7
6.4.1 Breaking load and elongation at fracture . 7
6.4.2 Structural elongation . 7
6.5 Technological properties . 7
6.5.1 Straightness . 7
6.5.2 Arc height . 7
6.5.3 Residual torsion . 7
6.5.4 Flare . 7
6.5.5 Steel cord elasticity . 7
6.5.6 Rubber penetration . 8
6.6 Brass coating . 8
6.6.1 Mass fraction of brass coating . 8
6.6.2 Thickness of coating . 8
6.6.3 Composition of brass . . 8
6.7 Adhesion force . 8
6.8 Constructions and properties . 8
7 Sampling . 9
8 Packing. 9
8.1 General . 9
8.2 Spools . 9
8.3 Packaging .10
Bibliography .18
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, Steel, Subcommittee SC 17, Steel wire
rod and wire products.
This second edition cancels and replaces the first edition (ISO 17832:2009), which has been technically
revised.
The following changes have been made:
— tensile strength for UT, ST and NT constructions has been updated;
— HI construction has been added;
— the tolerance for lay length has been narrowed from “±10 %” to “±5 %”;
— the tolerance of residual torsion for HE construction has been narrowed from ±4 torsion/6 m
to ±3 torsion/6 m;
— the tolerance for spool length has been narrowed;
— the weld breaking load for HT, ST and UT constructions has been increased.
iv © ISO 2018 – All rights reserved
INTERNATIONAL STANDARD ISO 17832:2018(E)
Non-parallel steel wire and cords for tyre reinforcement
1 Scope
This document specifies the definition and requirements of non-parallel steel wire and cords for tyre
reinforcement.
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 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection
ISO 3951-1, Sampling procedures for inspection by variables — Part 1: Specification for single sampling
plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic
and a single AQL
ISO 3951-2, Sampling procedures for inspection by variables — Part 2: General specification for single
sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection of independent quality
characteristics
ISO 3951-3, Sampling procedures for inspection by variables — Part 3: Double sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection
ISO 3951-5, Sampling procedures for inspection by variables — Part 5: Sequential sampling plans indexed
by acceptance quality limit (AQL) for inspection by variables (known standard deviation)
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 https: //www .iso .org/obp
3.1
filament
metal fibre with a metallic alloy coating used as an individual element in a strand (3.2) or cord (3.3)
3.2
strand
group of filaments (3.1) combined together to form a unit product for further processing
3.3
cord
formed structure composed of two or more filaments (3.1) when used as an end product, or a
combination of strands (3.2) or filaments and strands
3.3.1
single-strand cord
cord (3.3) formed by twisting two or more filaments (3.1) together
3.3.2
M+N type cord
cord (3.3) formed by twisting a number of n
...
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