Specification for copper-covered steel wire for telephone and telegraph purposes

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-08-1989

Publisher

British Standards Institution

Foreword
Committees responsible
Specification
1. Scope
2. Definitions
3. Manufacture
4. Quality of finished wire
5. Tolerances
6. Inspection and testing
7. Selection of test pieces and number of tests
8. Mechanical properties
9. Electrical properties
10. Continuity of coating
11. Retests
12. Packing and marking
Appendices
A. Information to be supplied by the purchaser
B. Factors for the conversion of electrical resistance
    to 20 deg C
Tables
1. Tolerances on diameter
2. Properties of copper-covered steel wire for
    telephone and telegraph purposes
3. Factors for the conversion of electrical resistance
    to 20 deg C

Mechanical and electrical properties of copper-covered steel wire with two grades of conductivity and three of tensile strength together with size tolerances for a range of wire sizes. Metric units.

This British Standard specifies the electrical and mechanical properties of cold drawn copper-covered steel wire for telephone and telegraph purposes, with two grades of conductivity and three of tensile strength (expressed as minimum breaking load) for a range of wire diameters from 0.51 mm to 4.88 mm together with diameter tolerances for a range of nominal wire diameters.

NOTE 1. The information to be supplied by the purchaser in the enquiry and order is given in appendix A.

NOTE 2. The titles of the publications referred to in this standard are listed on page 5.

Committee	ISE/106
DevelopmentNote	Supersedes 88/35114 DC and BS 4087(1966) (07/2005) Reviewed and confirmed by BSI, January 2011. (12/2010)
DocumentType	Standard
Pages	10
PublisherName	British Standards Institution
Status	Current
Supersedes	BS 4087:1966

BS 5714:1979	Method of measurement of resistivity of metallic materials
BS 4545:1970	Methods for mechanical testing of steel wire

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BS 4087:1989

Specification for copper-covered steel wire for telephone and telegraph purposes

Table of Contents

Abstract

Scope

General Product Information

Standards Referencing This Book

Category

Subcategory