ASTM A582/A582M-12

    Standard Specification for Free-Machining Stainless Steel Bars

    SUPERSEDED (see Active link, below)


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    1. Scope

    1.1 This specification covers hot-finished or cold-finished bars, except bars for forging (Note 1), suitable for machining processes. It includes rounds, squares, and hexagons in the more commonly used types of stainless free-machining steels designed especially for optimum machinability and for general corrosion and high-temperature service. Stainless steel bars other than the free-machining types are covered in a separate specification (Note 2).

    1.2 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable M specification designation (SI units), the inch-pound units shall apply. The values stated in either inch-pound units or SI (metric) units are to be regarded separately as standard: within the text and tables, the SI units are shown in [brackets]. 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 nonconformance with the specification.

    Note 1—For bars for reforging, see Specification A314.

    Note 2—For non-free machining stainless bars, see Specification A276.


    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

    A276 Specification for Stainless Steel Bars and Shapes

    A314 Specification for Stainless Steel Billets and Bars for Forging

    A370 Test Methods and Definitions for Mechanical Testing of Steel Products

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

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

    A959 Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels

    E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)


    ICS Code

    ICS Number Code 77.140.60 (Steel bars and rods)

    UNSPSC Code

    UNSPSC Code 30264500(Stainless steel bars)


    DOI: 10.1520/A0582_A0582M-12

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