ASTM B931-03

    Standard Test Method for Metallographically Estimating the Observed Case Depth of Ferrous Powder Metallurgy (P/M) Parts


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    1. Scope

    1.1 A metallographic method is described for estimating the observed case depth of ferrous powder metallurgy (P/M) parts. This method may be used for all types of hardened cases where there is a discernible difference between the microstructure of the hardened surface and that of the interior of the part.

    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 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

    B243 Terminology of Powder Metallurgy

    E407 Practice for Microetching Metals and Alloys


    ICS Code

    ICS Number Code 77.160 (Powder metallurgy)

    UNSPSC Code

    UNSPSC Code 23271805(Iron powder)


    Referencing This Standard

    DOI: 10.1520/B0931-03

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    Citation Format

    ASTM B931-03, Standard Test Method for Metallographically Estimating the Observed Case Depth of Ferrous Powder Metallurgy (P/M) Parts, ASTM International, West Conshohocken, PA, 2003, www.astm.org

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