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1.1 This specification covers general requirements common to wrought precious metal electrical contact alloy products in the form of sheet, strip, wire, and rod. Unless otherwise specified in the purchase order or in an individual specification, these general requirements shall apply to wrought electrical contact materials where indicated in the applicable product specifications issued by ASTM.
1.2 In case of conflict, the requirements on the purchase order, the individual specification, and this general specification shall prevail in the sequence named.
1.3 The values stated in inch-pound units are to be regarded as the standard. The metric equivalents of inch-pound units may be approximate.
1.4 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.
1.5 It is the responsibility of the user to become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet for this product/material as provided by the manufacturer.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B63 Test Method for Resistivity of Metallically Conducting Resistance and Contact Materials
B772 Guide for Specifying the Chemical Compositions for Electrical Contact Materials (Arcing and Nonarcing)
E3 Guide for Preparation of Metallographic Specimens
E8 Test Methods for Tension Testing of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E55 Practice for Sampling Wrought Nonferrous Metals and Alloys for Determination of Chemical Composition
E112 Test Methods for Determining Average Grain Size
E384 Test Method for Knoop and Vickers Hardness of Materials
ICS Number Code 77.120.99 (Other non-ferrous metals and their alloys)
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ASTM B476-90(1995)e1, Standard Specification for General Requirements for Wrought Precious Metal Electrical Contact Materials, ASTM International, West Conshohocken, PA, 2001, www.astm.orgBack to Top