ISO/DIS 2232

Round non-alloy steel wires for general purpose wire ropes, large diameter wire ropes and mine hoisting wire ropes -- Specifications

Fils ronds en acier non allié pour câbles à usage général, câbles de grand diamètre et câbles d’extraction minière -- Spécifications

Standards Content (sample)

DRAFT INTERNATIONAL STANDARD
ISO/DIS 2232
ISO/TC 105 Secretariat: SAC
Voting begins on: Voting terminates on:
2018-05-29 2018-08-21
Round non-alloy steel wires for general purpose wire
ropes, large diameter wire ropes and mine hoisting wire
ropes — Specifications

Fils ronds en acier non allié pour câbles à usage général, câbles de grand diamètre et câbles d’extraction

minière — Spécifications
ICS: 77.140.65
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
This document is circulated as received from the committee secretariat.
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 2232:2018(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2018
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ISO/DIS 2232:2018(E)
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© ISO 2018

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ii © ISO 2018 – All rights reserved
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ISO/DIS 2232:2018(E)
Contents Page

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

Introduction ..................................................................................................................................................................................................................................v

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

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

3  Terms and definitions ..................................................................................................................................................................................... 2

4 Wire Characteristics ......................................................................................................................................................................................... 2

4.1 General conditions of manufacture ....................................................................................................................................... 2

4.2 Diameter ....................................................................................................................................................................................................... 2

4.2.1 Nominal diameter, d ......................................................................................................................................................2

4.2.2 Actual diameter ................................................................................................................................................................. 2

4.3 Ovality of the wire ................................................................................................................................................................................ 2

4.4 Type .................................................................................................................................................................................................................. 3

5 Tensile grades .......................................................................................................................................................................................................... 3

5.1 Reverse bend strength ...................................................................................................................................................................... 4

5.2 Torsional strength ................................................................................................................................................................................ 7

5.3 Zinc or Zn/Al coating ......................................................................................................................................................................... 8

6 Sampling ........................................................................................................................................................................................................................ 9

7 Tests ................................................................................................................................................................................................................................10

7.1 Measurement of diameter ..........................................................................................................................................................10

7.2 Tensile test ...............................................................................................................................................................................................10

7.3 Reverse bend test ...............................................................................................................................................................................10

7.4 Torsion test..............................................................................................................................................................................................10

7.5 Inspection of Zinc or Zn/Al alloy coating ......................................................................................................................10

8  Certificate ..................................................................................................................................................................................................................10

8.1 Certificate of conformity ..............................................................................................................................................................10

8.2 Full works certificate ......................................................................................................................................................................10

8.3 Certificate of acceptance ..............................................................................................................................................................10

9 Marking .......................................................................................................................................................................................................................11

10 Information to be supplied by the purchaser......................................................................................................................11

Annex A (normative) Determination of mass of Zinc or Zn/Al alloy deposited per unit of

surface area.............................................................................................................................................................................................................12

Annex B (normative) Test for adhesion of coating ..............................................................................................................................15

Annex C (informative) Definitions of terms relating to sampling and terms of acceptance ....................16

Bibliography .............................................................................................................................................................................................................................17

© ISO 2018 – All rights reserved iii
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ISO/DIS 2232:2018(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: www .iso .org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 105, Steel wire ropes.

This third edition cancels and replaces the second edition (ISO 2232:1990), which has been technically

revised.
The main changes compared to the previous edition are as follows:
2 2
— Addition of tensile grades 2260 N/mm and 2360 N/mm
— Inclusion of wire for mine hoisting ropes previously covered by ISO 6984
iv © ISO 2018 – All rights reserved
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ISO/DIS 2232:2018(E)
Introduction

This International Standard was developed in response to a worldwide demand for a specification

giving minimum requirements for non-alloy steel wires for general purpose, large diameter and mine

hoisting wire ropes.

As in previous editions, this edition of ISO 2232 specifies metric sizes and grades of wire for the more

common diameter and grades of wire.
© ISO 2018 – All rights reserved v
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DRAFT INTERNATIONAL STANDARD ISO/DIS 2232:2018(E)
Round non-alloy steel wires for general purpose wire
ropes, large diameter wire ropes and mine hoisting wire
ropes — Specifications
1 Scope

This document specifies round non-alloy steel wires to be used in the manufacture of general purpose,

large diameter and mine hoisting wire ropes.
It specifies
— the dimensional tolerances;
— the mechanical characteristics;
— the conditions with which coatings, if any, shall comply;
— the conditions of sampling, control and terms of acceptance.

It applies to round, bright, Zinc (Zn) or Zinc/Aluminum (Zn/Al) alloy coated wires of Quality A or Quality

B and of nominal diameters from 0,2 mm to 7.0 mm.
It does not apply to steel wire taken from manufactured ropes.
It does not apply to wire for steel wire ropes for special applications, such as
— ropes for aircraft controls;
— ropes for aerial ropeways;
— ropes for lifts.
— ropes for prestressed concrete.
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 1460, Metallic coatings — Hot dip galvanized coatings on ferrous materials — Gravimetric

determination of the mass per unit area
ISO 2408, Steel wire ropes — Requirements

ISO 3154, Stranded wire ropes for mine hoisting — Technical delivery requirements

ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature.

ISO 7800, Metallic materials — Wire — Simple torsion test.
ISO 7801, Metallic materials — Wire — Reverse bend test.
ISO 7802, Metallic materials — Wire — Wrapping test.

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

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ISO/DIS 2232:2018(E)

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

purpose wire rod

ISO 16120-4, Non-alloy steel wire rod for conversion to wire — Part 4: Specific requirements for wire rod

for special applications

ISO 10425, Steel wire ropes for the petroleum and natural gas industries — Minimum requirements and

terms of acceptance
ISO 17893, Steel wire ropes — Vocabulary, designation and classification

ISO 28590, Sampling procedures for inspection by attributes — Introduction to the ISO 2859 series of

standards for sampling for inspection by attributes
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 https: //www .iso .org/obp
4 Wire Characteristics
4.1 General conditions of manufacture

Wire shall be made by the basic open hearth, electric furnace or basic oxygen process or by equivalent

methods.

The nominal diameter of the wire, in millimeters, is that by which the wire is designated. It shall be the

basis on which the values of all characteristics are determined for the acceptance of the wire.

The finished wires shall not show superficial or internal defects detrimental to their use.

When specified, the wires shall be supplied with a zinc coating or Zn/Al alloy coating, as required,

applied by the hot dip or the electrolytic process.
4.2 Diameter
4.2.1 Nominal diameter, d

The nominal diameter of the wire in millimeters is that by which the wire is designated. It shall be the

basis on which the values of all characteristics are determined for acceptance of the wire.

4.2.2 Actual diameter

The actual diameter of the wire is the arithmetic mean of the two measurements carried out in

accordance with 5.1. It shall be within the limits of tolerance specified in Table 1.

4.3 Ovality of the wire

The arithmetic difference between the two measurements of the diameter shall not be more than half

the tolerance specified in Table 1.
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ISO/DIS 2232:2018(E)
Table 1 — Tolerances on diameter
Values in millimeters
Nominal
diameter of wire Tolerance on diameter Tolerance on diameter
mm Bright wires and Zn or Zn/Al alloy
Zn or Zn/Al alloy coated coated wires
wires Quality B Quality A
0,2≤d<0,5 +/- 0,01 +/- 0,03
0,5≤d<0,8 +/- 0,015 +/- 0,03
0,8 1≤d<1,6 +/- 0,02 +/- 0,04
1.6≤d<2,4 +/- 0,025 +/- 0,05
2,4≤d<3,7 +/- 0,03 +/- 0,06
3,7≤d<5,2 +/- 0,03 +/- 0,07
5,2≤d≤7,0 +/- 0,04 +/- 0,08
4.4 Type
This specification provides details on two types of wires,

3.4.1 Standard Duty - wire is specified for general purpose and large diameter ropes

3.4.2 High Duty- wire is specified for demanding applications such as mine hoisting ropes

5 Tensile grades
─ 1570 MPa for wires of all classes, Quality A and B
─ 1770 MPa for wires of all classes, Quality A and B
─ 1960 MPa for wires of all classes, Quality A and B
─ 2160 MPa for bright wires and zinc or Zn/Al alloy coated wires, Quality B
─ 2260 MPa for bright wires and zinc or Zn/Al alloy coated wires, Quality B
─ 2360 MPa for bright wires and zinc or Zn/Al alloy coated wires, Quality B

These nominal values are the lower limits of strength. The upper limits are equal to the lower limits

plus the tolerances specified in table 2.
The test shall be performed in accordance with 5.2.

NOTE Other tensile grades may be used by agreement between the manufacturer and the supplier.

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ISO/DIS 2232:2018(E)
Table 2 — Tolerances on tensile grade
Nominal diameter of wire, d Tolerance on tensile grade
mm MPa
0,2≤d<0,5 390
0,5≤d<1 350
1≤d<1,5 320
1,5≤d<2 290
2≤d<3.5 260
3,5≤d 5.1 Reverse bend strength

The wire shall withstand, without breaking, the minimum number of reverse bends specified in table

3A or 3B for the appropriate type, diameter, tensile grade and finish. The radius of curvature of the

supports for the various wire diameters is also specified.
The test shall be in accordance with 5.3.

If the tensile grade of a wire lies between two tensile grades given in table 3, then the number of reverse

bends for the next upper tensile grade shall be chosen.

Table 3A — Minimum number of reverse bends for Standard Duty wire for general purpose and

large diameter ropes
Bright and Zn or Zn/Al alloy coated wire Zn or Zn/Al alloy coated wire
Nominal Wire Radius of Curvature of
Quality B Quality A
Diameter Supports
Tensile strength grade - MPa Tensile strength grade - MPa
d (mm) mm 1570 1770 1960 2160 2260 2360 1570 1770 1960
0,2≤d<0,25
0,25≤d<0,3
0,3≤d<0,4
0,4≤d<0,5
0,5≤d<0,55 1.75 15 14 13 12 11 10
0,55≤d<0,6 14 13 12 11 10 9
0,6≤d<0,65 12 11 10 9 8 7
0,65≤d<0,7 11 10 9 8 7 6
0,7≤d<0,75 2,5 17 16 15 14 13 12 13 12 11
0,75≤d<0,8 16 15 14 13 12 11 12 11 10
0,8≤d<0,85 14 13 12 11 10 9 11 10 9
0,85≤d<0,9 13 12 11 10 9 8 10 9 8
0,9≤d<0,95 12 11 10 9 8 7 9 8 7
0,95≤d<1 11 10 9 8 7 6 8 7 6
1≤d<1,1 3,75 18 17 16 14 13 12 15 14 12
1,1≤d<1,2 17 16 15 13 12 11 14 13 11
1,2≤d<1,3 16 15 14 12 11 10 12 11 9
1,3≤d<1,4 14 13 12 10 9 8 10 8 7
1,4≤d<1,5 12 11 10 9 8 7 8 7 6
1,5≤d<1,6 5 15 14 13 12 11 10 11 10 9
1,6≤d<1,7 14 13 12 11 10 9 10 9 8
1,7≤d<1,8 12 11 11 10 9 8 9 8 7
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ISO/DIS 2232:2018(E)
Table 3A (continued)
1,8≤d<1,9 11 10 10
...