ASTM B663 / B663M - 20

    Standard Specification for Silver-Tungsten Carbide Electrical Contact Material

    Active Standard ASTM B663 / B663M | Developed by Subcommittee: B02.05

    Book of Standards Volume: 02.04


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    Abstract

    This specification covers electrical contact components made from silver-tungsten carbide by powder metallurgical procedures. This specification covers compositions within the silver-tungsten carbide system. The material shall conform to composition limits. Chemical analysis shall be performed to deteremine material conformance to specified composition requirements. The contact components shall agree on qualification tests for determination of physical properties. The tests shall be performed on production parts wherever practical or applicable. The test shall be determined after consideration of the function of the part.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification covers electrical contact components made from silver-tungsten carbide materials by powder metallurgical processes.

    1.2 This specification covers compositions within the silver-tungsten carbide system normally specified by users of contacts.

    Note 1: Table X1.1 and Table X1.2 in Appendix X1 provide a list of typical compositions used for various applications.

    1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

    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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.

    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.


    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

    B328 Test Method for Density, Oil Content, and Interconnected Porosity of Sintered Metal Structural Parts and Oil-Impregnated Bearings


    ICS Code

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

    UNSPSC Code

    UNSPSC Code 31133702(Electrical contact powdered metal and metal alloy)


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

    DOI: 10.1520/B0663_B0663M-20

    Citation Format

    ASTM B663 / B663M-20, Standard Specification for Silver-Tungsten Carbide Electrical Contact Material, ASTM International, West Conshohocken, PA, 2020, www.astm.org

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