ASTM WK34853

    Revision of E10 - 10 Standard Test Method for Brinell Hardness of Metallic Materials

    (What is a Work Item?)

    Active Standard: E10 - 14

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


    1. Rationale

    The proposed revision is to clarify how Brinell hardness values are to be reported to 3 significant digits. The Brinell hardness standard ASTM E 10-10 states that a Brinell hardness value shall be reported as: 9.1.1 The Brinell hardness value H of the test results rounded to three significant digits in accordance with Practice E 29, for example, 125 HBW or 99.2 HBW. However, ASTM standard ASTM E29-08, Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications, states in clause that The significance of trailing zeros for numbers represented without the use of a decimal point can only be identified from knowledge of the source of the value. Therefore, a value of 300 HBW can be interpreted as having only one significant digit (the 3) since trailing zero digits may not be significant.


    Brinell; hardness; mechanical test; metals; Brinell hardness; Metallic hardness ;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Samuel Low


    COS (14-04)

    Ballot Item Approved as E10-2014 and Pending Publication