ASTM A322 - 13

    Standard Specification for Steel Bars, Alloy, Standard Grades

    Active Standard ASTM A322 | Developed by Subcommittee: A01.15

    Book of Standards Volume: 01.05


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    Abstract

    This specification covers hot-wrought alloy steel bars. The steel shall be made by one or more of the following primary processes: open-hearth, basic-oxygen, or electric-furnace. The primary melting may incorporate separate degassing or refining and may be followed by secondary melting using electro-slag remelting or vacuum arc remelting. Where secondary remelting is employed, the heat shall be defined as all of the cast product remelted from a single primary heat. The steel shall be furnished as strand cast or ingot cast. Immediately after hot forming, the bars shall be allowed to cool to a temperature below the critical range under suitable conditions to prevent imperfections caused by too rapid cooling. The bars shall be free of pipe, cracks, and flakes. Within the limits of good manufacturing and inspection practices, the bars shall be free of injurious seams, laps, segregation, or other imperfections which are due to their nature, degree, or extent, will interfere with the use of the material in machining or fabrication of suitable parts.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification covers hot-wrought alloy steel bars. Bar applications include forging, heat treating, cold drawing, machining and many structural components (Note 1).

    Note 1A guide for the selection of steel bars is contained in Practice A400.

    1.2 The bars shall be furnished in the grades specified in Table 1. Sections and sizes of bar steel available are covered in Specification A29/A29M. Hot-wrought alloy steel bars are produced in cut lengths and coils; the manufacturer should be consulted regarding sections and sizes available in coils, produced to a chemical composition.

    1.3 Some applications may require superior surface quality, or special chemical restrictions, metallurgical characteristics, heat treatment, or surface finishes which the purchaser may obtain by designating one or more of the available Supplementary Requirements.


    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

    A29/A29M Specification for Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for

    A304 Specification for Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements

    A400 Practice for Steel Bars, Selection Guide, Composition, and Mechanical Properties

    E112 Test Methods for Determining Average Grain Size

    E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings

    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 30263700(Steel alloy bars)


    Referencing This Standard

    DOI: 10.1520/A0322

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM A322-13, Standard Specification for Steel Bars, Alloy, Standard Grades, ASTM International, West Conshohocken, PA, 2013, www.astm.org

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