Abstract

This specification covers bare round copper-clad steel wire for electronic application. Four classes of copper-clad steel wire are covered as Class 30HS, 30A, 40HS, and 40A. The wire shall consist of a core of homogeneous open-hearth, electric-furnace, or basic-oxygen steel with a continuous outer cladding of copper thoroughly bonded to the core throughout. The copper-lad steel wire shall conform to the tensile strength and elongation requirements. Electrical resistivity test shall be performed at a specified temperature of each class of wire and shall not exceed the values prescribed in this specification. Dimensional measurements shall be made with a micrometer caliper and shall withstand torsion test without fracturing. Copper cladding to the steel of each of the four specimens shall conform to the adhesion criterion. Surface finish shall meet the required allowable number of defects.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 This specification covers bare round copper-clad steel wire for electronic application.

1.2 Four classes of copper-clad steel wire are covered as follows:

1.2.1 Class 30HS Nominal 30 % conductivity hard-drawn,

1.2.2 Class 30A Nominal 30 % conductivity annealed,

1.2.3 Class 40HS Nominal 40 % conductivity hard-drawn, and

1.2.4 Class 40A Nominal 40 % conductivity annealed.

1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are in SI units.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

B193 Test Method for Resistivity of Electrical Conductor Materials

B258 Specification for Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid Round Wires Used as Electrical Conductors

National Institute of Standards and Technology

Keywords

clad steel electrical conductor; copper electrical conductor copper-clad steel; copper-clad steel electrical conductor; electrical conductor; hard drawn copper-clad steel wire; steel wire copper-clad; Clad steel electrical conductor (copper); Copper-clad steel electrical conductors; Electrical conductors--copper; Hard-drawn copper electrical wire; Steel wire (copper processed) ;

ICS Code

ICS Number Code 29.060.10 (Wires)

DOI: 10.1520/B0452-09

ASTM International is a member of CrossRef.

ASTM B452