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ASTM B520-12

Current Revision

Standard Specification for Tin-Coated, Copper-Clad Steel Wire for Electronic Application

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1.1 This specification covers tin-coated copper-clad steel wire for electronic application.

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

1.2.1 Class T30HS—Nominal 30 % conductivity, hard-drawn,

1.2.2 Class T30A—Nominal 30 % conductivity, annealed,

1.2.3 Class T40HS—Nominal 40 % conductivity, hard-drawn, and

1.2.4 Class T40A—Nominal 40 % conductivity, annealed.

1.3 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.

1.3.1 Exception—The SI values for resistivity and volume are to be regarded as standard.

1.4 The following safety hazards caveat pertains only to the test method portion, Section 6, of 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.)


This specification covers tin-coated, copper-clad steel wires for electronic applications. The four classes of steel wires considered here are: hard-drawn wires with 30% nominal conductivity (Class T30HS); annealed wires with 30% nominal conductivity (Class T30A); hard-drawn wires with 40% nominal conductivity (Class T40HS); and annealed wires with 40% nominal conductivity (Class T40A). Specimens shall go through tests and shall adhere to specified requirements for dimensions, electrical resistivity, tensile strength, and coating continuity and adherence.


SDO ASTM: ASTM International
Document Number B520
Publication Date Oct. 15, 2012
Language en - English
Page Count 6
Revision Level 12
Supercedes
Committee B01.06
Publish Date Document Id Type View
Oct. 15, 2012 B0520-12 Revision
Oct. 1, 2023 B0520-12R23 Reaffirmation
April 1, 2017 B0520-12R17 Reaffirmation
Oct. 1, 2007 B0520-93R07 Reaffirmation
March 10, 1998 B0520-93R98E01 Reaffirmation
July 15, 1993 B0520-93R02E01 Reaffirmation