ASTM B664-90(2006)

    Standard Specification for 80 % Silver-20 % Graphite Sliding Contact Material

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    1. Scope

    1.1 This specification defines the criteria for composition and other requirements for brushes with a nominal silver content of 80 %, by weight, with the balance being substantially graphite.

    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 will 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.


    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

    B613 Guide for Preparing Specifications for Miniature Brushes of Composite Materials for Sliding Electric Contacts

    E18 Test Methods for Rockwell Hardness of Metallic Materials

    ANSI Standard

    C64.1 Brushes for Electrical Machines Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.


    ICS Code

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

    UNSPSC Code

    UNSPSC Code


    DOI: 10.1520/B0664-90R06

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