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    ASTM B657 - 18

    Standard Guide for Metallographic Identification of Microstructure in Cemented Carbides

    Active Standard ASTM B657 | Developed by Subcommittee: B09.06

    Book of Standards Volume: 02.05

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    Significance and Use

    4.1 The microstructure of a cemented carbide affects the material's mechanical and physical properties. This guide is not intended to be used as a specification for carbide grades. Producers and users may use the microstructural information as a guide in developing their own specifications.

    1. Scope

    1.1 This guide covers apparatus and procedures for the metallographic identification of microstructures in cemented carbides.

    1.2 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Precautions applying to use of hazardous laboratory chemicals should be observed for chemicals specified in Table 1.

    1.3 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

    B665 Guide for Metallographic Sample Preparation of Cemented Tungsten Carbides

    ISO Standard

    ISO 4499 HardmetalsMetallographic Determination of Microstructure

    ICS Code

    ICS Number Code 77.160 (Powder metallurgy)

    UNSPSC Code

    UNSPSC Code 31191518(Tungsten carbide)

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

    DOI: 10.1520/B0657-18

    Citation Format

    ASTM B657-18, Standard Guide for Metallographic Identification of Microstructure in Cemented Carbides, ASTM International, West Conshohocken, PA, 2018, www.astm.org

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