ASTM A247-06

    Standard Test Method for Evaluating the Microstructure of Graphite in Iron Castings

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    1. Scope

    1.1 This test method covers the classification of graphite in cast irons in terms of type, distribution, and size. This test method is intended to be applicable for all iron-carbon alloys containing graphite particles, and may be applied to gray irons, malleable irons, and the ductile (nodular) irons.

    1.2 The reference standards included in this test method are in no way to be construed as specifications. In an appropriate specification for a specific material where graphite microstructure is an important consideration this test method may be used as a reference to define concisely the graphite microstructure required.

    1.3 These standards are offered primarily to permit accurate reporting of microstructures of cast irons and to facilitate the comparison of reports by different laboratories or investigators.

    This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to consult and 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

    E3 Guide for Preparation of Metallographic Specimens


    ICS Code

    ICS Number Code 77.140.80 (Iron and steel castings)

    UNSPSC Code

    UNSPSC Code 31100000(Castings and casting assemblies)


    DOI: 10.1520/A0247-06

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