ISO 3108:2017

INTERNATIONAL ISO
STANDARD 3108
Second edition
2017-10
Steel wire ropes — Test method —
Determination of measured breaking
force
Câbles en acier — Méthode d'essai — Détermination de la force de
rupture mesurée
Reference number
ISO 3108:2017(E)
©
ISO 2017

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ISO 3108:2017(E)

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ii © ISO 2017 – All rights reserved

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ISO 3108:2017(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Sample preparation . 2
5.1 General . 2
5.2 Molten metal or resin socketing method . . 3
5.3 Ferrule pressing method . 3
5.4 Direct gripping method . 4
5.5 Sample preparation by method of wrapping . 4
6 Test equipment. 4
7 Procedure. 4
8 Test report . 5
Bibliography . 6
© ISO 2017 – All rights reserved iii

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ISO 3108:2017(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
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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
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URL: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 105, Steel wire ropes.
This second edition cancels and replaces the first edition (ISO 3108:1974), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— the following clauses have been added:
— Terms and definitions (see Clause 3);
— Principle (see Clause 4);
— Sample preparation (see Clause 5);
— Testing machine requirements (see Clause 6);
— Safety requirements (see 7.6);
— Testing result justification (see 7.8);
— the test speed of the load applied at approximately 10 Mpa per second after 80 % of F achieved
min
has been changed to the speed at the rate of not more than 0,5 % of F per second (see 7.6).
min
iv © ISO 2017 – All rights reserved

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INTERNATIONAL STANDARD ISO 3108:2017(E)
Steel wire ropes — Test method — Determination of
measured breaking force
1 Scope
This document specifies a method of tensile test to destruction for determining the actual breaking
force of steel wire ropes as given in ISO 2408.
It is also applicable for other ropes, unless the International Standard concerned specifically excludes
its use, or gives another method.
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 7500-1, Metallic materials — Calibration and verification of static uniaxial testing machines — Part 1:
Tension/compression testing machines — Calibration and verification of the force-measuring system
ISO 17558, Steel wire ropes — Socketing procedures — Molten metal and resin socketing
ISO 17893, Steel wire ropes — Vocabulary, designation and classification
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 17558, ISO 17893 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1
force at first wire breaking
force value measured when break
...