ASTM WK44847

    Revision of E290 - 13 Standard Test Methods for Bend Testing of Material for Ductility

    (What is a Work Item?)

    Active Standard: E290 - 13

    Developed by Subcommittee: E28.02 | Committee E28 | Contact Staff Manager



    WK44847

    1. Rationale

    The most recent wording of 3.6.2 of E290-13 (The surfaces of the supports and plunger shall be harder than the material tested.) has met with the criticism that, in bending, the loads are such that even supports and plungers softer than the test piece will not reach yield and flatten. No flattening has been observed by users who test thin armor plate that is harder than the supports or plunger meeting 3.6.2 of E290-09, i.e., 20 HRC. For them, complying with 3.6.2 of E290-13 would be onerous, unnecessary, and costly.


    Keywords

    bend; crack; ductility; flattened bend; forming limit; fracture; free bend; guided bend; mandrel; pin; plunger; roller ;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    01-24-2014

    Technical Contact:
    Richard Fields

    Item:
    014

    Ballot:
    E28 (14-01)

    Status:
    Ballot Item Approved as E290-2014 and Pending Publication