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    ASTM WK21388

    Work Item: ASTM WK21388 - Revision of E18 - 08a Standard Test Methods for Rockwell Hardness of Metallic Materials

    (What is a Work Item?)

    Active Standard: E18 - 14

    Developed by Subcommittee: E28.06 | Committee E28 | Contact Staff Manager



    1. Rationale

    There are four sections being revised for better clarification, including: 1) The proposed ballot item is to make optional the requirement to mark the tolerance value for error E on a test block in section A4.6.2.2. 2) The secopnd revision is to make it clear that daily verification and indirect verification hardness measurements are to be made only on the calibrated surface of a test block in sections 7.1 and A1.4.3. 3) The proposed revision is to require that only one surface of a test block may be calibrated in section A4.5.1 and A4.6.1. 4) The proposed revision to correct paragraph A3.4.5.4 and the procedure and performance requirements for verifying ball indenters.


    Keywords

    hardness; mechanical test; metals; Rockwell; Calibration--metals/alloys analysis instrumentation; Metal electrical conductors; Rockwell hardness; Testing machines; Verification;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    09-23-2008

    Technical Contact:
    Samuel Low

    Item:
    014

    Ballot:
    E28 (08-03)

    Status:
    Ballot Item Approved

    Item:
    015

    Ballot:
    E28 (08-03)

    Status:
    Ballot Item Approved

    Item:
    016

    Ballot:
    E28 (08-03)

    Status:
    Ballot Item Approved