ASTM F138-13

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


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    1. Scope

    1.1 This specification covers the chemical, mechanical, and metallurgical requirements for wrought 18chromium-14nickel-2.5molybdenum stainless steel bar and wire used for the manufacture of surgical implants.

    1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels

    A484/A484M Specification for General Requirements for Stainless Steel Bars, Billets, and Forgings

    A555/A555M Specification for General Requirements for Stainless Steel Wire and Wire Rods

    A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products

    E8/E8M Test Methods for Tension Testing of Metallic Materials

    E10 Test Method for Brinell Hardness of Metallic Materials

    E18 Test Methods for Rockwell Hardness of Metallic Materials

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E45 Test Methods for Determining the Inclusion Content of Steel

    E112 Test Methods for Determining Average Grain Size

    E354 Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and Cobalt Alloys

    E407 Practice for Microetching Metals and Alloys

    F981 Practice for Assessment of Compatibility of Biomaterials for Surgical Implants with Respect to Effect of Materials on Muscle and Bone

    F1350 Specification for Wrought 18Chromium-14Nickel-2.5Molybdenum Stainless Steel Surgical Fixation Wire (UNS S31673)

    Aerospace Material Standard

    AMS 2630 Inspection, Ultrasonic Product Over 0.5 inch (12.7 mm) Thick

    AMS 2632 Ultrasonic Inspection of Thin Materials


    ICS Code

    ICS Number Code 11.040.40 (Implants for surgery, prothetics and orthotics)

    UNSPSC Code

    UNSPSC Code 42295500(Surgical implants and expanders and extenders and surgical wires and related products)


    Referencing This Standard
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    DOI: 10.1520/F0138-13

    Citation Format

    ASTM F138-13, Standard Specification for Wrought 18Chromium-14Nickel-2.5Molybdenum Stainless Steel Bar and Wire for Surgical Implants (UNS S31673), ASTM International, West Conshohocken, PA, 2013, www.astm.org

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