ASTM B780-98(2004)

    Standard Specification for 75% Silver, 24.5% Copper, 0.5% Nickel Electrical Contact Alloy


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    1. Scope

    1.1 This specification covers an electrical contact material with the nominal composition of 75 % silver, 24.5 % copper, and 0.5 % nickel in the form of rod, wire, strip, and sheet.

    This standard does not purport to address all 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 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    B476 Specification for General Requirements for Wrought Precious Metal Electrical Contact Materials


    ICS Code

    ICS Number Code 77.120.99 (Other non-ferrous metals and their alloys)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/B0780-98R04

    ASTM International is a member of CrossRef.


    Citation Format

    ASTM B780-98(2004), Standard Specification for 75% Silver, 24.5% Copper, 0.5% Nickel Electrical Contact Alloy, ASTM International, West Conshohocken, PA, 2004, www.astm.org

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