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ASTM B298-12(2017)

Historical Reaffirmation

Standard Specification for Silver-Coated Soft or Annealed Copper Wire

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1.1 This specification covers silver-coated, soft or annealed, round copper wire, intended for use in electrical equipment, as follows:

1.1.1 Class A—Wire whose silver coating is at least 1.25 % of the total weight of the coated wire.

1.1.2 Class B—Wire whose silver coating is at least 2.50 % of the total weight of the coated wire.

1.1.3 Class C—Wire whose silver coating is at least 4.00 % of the total weight of the coated wire.

1.1.4 Class D—Wire whose silver coating is at least 6.10 % of the total weight of the coated wire.

1.1.5 Class E—Wire whose silver coating is at least 10.00 % of the total weight of the coated wire.

1.2 Silver-coated wire having different minimum percentages of silver by weight 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 Table 1 (Explanatory Note 1).

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 Exceptions—The SI values for density, resistivity, and volume are to be regarded as standard.

1.4 The following precautionary caveat pertains only to the test method section 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. For specific precautionary statements see 8.4.1.2 and Explanatory Note 2.

1.5 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.


This specification covers silver-coated, soft or annealed, round copper wire, intended for use in electrical equipment. The silver-coated wires are classified according to the total weight of the coated wires, namely; Class A, B, C, D, and E. Tensile strength test, resistivity test, weight of coating, and dimensional measurements shall be performed to conform to the requirements specified.


SDO ASTM: ASTM International
Document Number B298
Publication Date April 1, 2017
Language en - English
Page Count 8
Revision Level 12(2017)
Supercedes
Committee B01.04
Publish Date Document Id Type View
Nov. 15, 2012 B0298-12 Revision
May 15, 2007 B0298-07 Revision
April 10, 1999 B0298-99E01 Revision
April 10, 1999 B0298-99 Revision
Oct. 1, 2024 B0298-12R24 Reaffirmation
April 1, 2017 B0298-12R17 Reaffirmation