ASTM B870-08

    Standard Specification for Copper-Beryllium Alloy Forgings and Extrusions Alloys (UNS Nos. C17500 and C17510)


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    1. Scope

    1.1 This specification establishes the requirements for copper-beryllium alloy forgings and extrusions. The following alloys are specified:

    Copper Alloy
    UNS No.
    Nominal Composition, %
    BerylliumCobaltNickel
    C175000.502.6
    C175100.401.8

    1.2 UnitsThe 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 The following safety hazard caveat pertains to Sections 10 and 11 of this specification: 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.


    ICS Code

    ICS Number Code 77.120.30 (Copper and copper alloys)

    UNSPSC Code

    UNSPSC Code 31133100(Copper forgings); 31111605(Copper impact extrusions)


    Referencing This Standard

    DOI: 10.1520/B0870-08

    ASTM International is a member of CrossRef.


    Citation Format

    ASTM B870-08, Standard Specification for Copper-Beryllium Alloy Forgings and Extrusions Alloys (UNS Nos. C17500 and C17510), ASTM International, West Conshohocken, PA, 2008, www.astm.org

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