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This specification covers nickel-coated, round, copper-clad steel wire for electronic applications. The nickel-coated wire shall consist of the basis wire coated with nickel. Tensile strength and elongation of the nickel-coated wire shall conform to the specified requirements for the applicable size and class of copper-clad steel wire. The electrical resistivity shall not exceed the values specified. Continuity, adherence, and mass of the coating shall be determined. Necessary joints in the wire and rod prior to final coating and drawing shall be made.
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.
1.1 This specification covers nickel-coated, round, copper-clad steel wire for electronic application.
1.2 Nickel coatings in mass percentages of the total mass of the coated wire are as follows: 2, 4, 7, 10, and 27 %. Nickel-coated wire having different minimum mass percentages of nickel may be obtained by mutual agreement between the manufacturer and the purchaser. For information purposes, the thickness of coating in microinches provided by the percentages listed above is shown in .
1.3 Four classes of nickel-coated, copper-clad steel wire are covered as follows:
1.3.1 Class N30HS—Nominal 30 % conductivity, hard drawn.
1.3.2 Class N30A—Nominal 30 % conductivity, annealed.
1.3.3 Class N40HS—Nominal 40 % conductivity, hard drawn.
1.3.4 Class N40A—Nominal 40 % conductivity, annealed.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4.1 Exception—The SI values for resistivity are to be regarded as standard.
1.5 The following safety hazards caveat pertains only to the test method described in this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. (Warning—Consideration should be given to toxicity and flammability when selecting solvent cleaners.)
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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
B452 Specification for Copper-Clad Steel Wire for Electronic Application
E75 Test Methods for Chemical Analysis of Copper-Nickel and Copper-Nickel-Zinc Alloys
NIST StandardNBS Handbook 100 Copper Wire Tables
American Chemical SocietyStandard Reagents Tests
ICS Number Code 29.060.10 (Wires)
UNSPSC Code 26121520(Copper steel wire)
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ASTM B559-12(2017), Standard Specification for Nickel-Coated, Copper-Clad Steel Wire for Electronic Application, ASTM International, West Conshohocken, PA, 2017, www.astm.orgBack to Top