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    Volume 24, Issue 2 (March 1996)

    Minimum Thickness Requirements for Rockwell Hardness Testing

    Published Online: 01 March 1996

    CODEN: JTEVAB

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    Abstract

    A study was performed in an attempt to resolve the conflicting thickness requirements for Rockwell hardness testing specified in ASTM Standard Test Methods E 18-93 and in ISO Standard 6508. Commercial standardized hardness test blocks were machined to “steps” of various thicknesses using a wire EDM (electrical discharge machining) process. Rockwell hardness tests were performed on the original standardized surface of these “stepped” blocks in an attempt to determine the minimum thicknesses required for reliable Rockwell hardness testing. The extremes of test force and hardness were investigated for both the diamond brale and 1/16 in. (1.588 mm) ball indenters.


    Author Information:

    Heberling, TG
    President, HTS Standardization Consultants, Inc., Middletown, OH

    Fee, AR
    Consultant, vice president and general manager, Canton, MA

    Tobolski, EL
    Consultant, vice president and general manager, Canton, MA


    Stock #: JTE12687J

    ISSN:0090-3973

    DOI: 10.1520/JTE12687J

    Author
    Title Minimum Thickness Requirements for Rockwell Hardness Testing
    Symposium ,
    Committee B10C12D07D18E08E13