ASTM WK64828

    Revision of F138 - 13a Standard Specification for Wrought 18Chromium-14Nickel-2.5Molybdenum Stainless Steel Bar and Wire for Surgical Implants (UNS S31673)

    (What is a Work Item?)

    Active Standard: F138 - 19

    Developed by Subcommittee: F04.12 | Committee F04 | Contact Staff Manager



     metals (for surgical implants); stainless steel; surgical applications wire; surgical implants;


    1.Updated all locations of SI and English units so that SI units are listed first 2.Redefined bar as product that is provided as straightened and cut to defined lengths. The old definition limited bar to a minimum dimension and that is not true in the modern era 3.Redefined wire as a product form that is provided in coil form 4.Updated the footnote for table 1, Mechanical Requirements, Bar and Wire, reference the gauge lengths relative to their respective test methods 5.Added 7.1.3, and 7.1.4 to elaborate on requirements for testing and certifying non-specified elements 6.Reworded footnote A for Table 4 to specify that table 4 limits conform to the applicable specifications for Wire and Bar and added reference to A484/A484M 7.Added 7.2.3 to elaborate that the product analysis does not broaden the heat analysis 8.Renumbered 7.2.3 to 7.2.4 to accommodate added paragraphs 9.Added test headings, such as Intergranular Corrosion in Section 11 to improve readability. Renumbered sections as required by this change. 10.Added the word homogenous to the grain size requirement in 11.2.1. This addition harmonizes the specification with ASTM F 139.

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    Work Item Status

    Date Initiated:

    Technical Contact:
    Rod McMillan


    F04 (19-05)

    Ballot Item Approved as F138-2019 and Pending Publication