ASTM-B477 › Historical Revision Information
Standard Specification for Gold-Silver-Nickel Electrical Contact Alloy
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This specification covers gold-silver-nickel alloy tubing, rod, wire, strip, and sheet material for sliding electrical contacts. Raw materials shall be of such quality and purity that the finished product will have the properties and characteristics prescribed in this specification. The material shall be finished by cold working, heat treating, annealing, turning, grinding, or pickling as are required to produce the prescribed properties. Material produced shall meet the chemical composition requirements. Mechanical properties such as tensile strength, elongation, Knoop hardness, microhardness, as well as the electrical contact shall conform to the prescribed specification.
Scope
1.1 This specification covers 75 % gold-22 % silver-3 % nickel alloy tubing, rod, wire, strip, and sheet material for sliding electrical contacts.
1.2 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 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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.
Keywords
contacts; electrical contact alloy; gold alloy; ICS Number Code 77.120.99 (Other non-ferrous metals and their alloys)
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77.120.99 (Other non-ferrous metals and their alloys)
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Document Number
ASTM-B477-97(2012)
Revision Level
1997 R12 EDITION
Status
Superseded
Modification Type
Reapproval
Publication Date
Dec. 1, 2012
Document Type
Specification
Page Count
3 pages
Committee Number
B02.05