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    ASTM A576 - 17

    Standard Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality

    Active Standard ASTM A576 | Developed by Subcommittee: A01.15

    Book of Standards Volume: 01.05

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    This specification covers hot-wrought special quality carbon steel bars. Special quality bar applications include forging, heat treating, cold drawing, machining, and many structural uses. The steel shall be made by one or more of the following primary processes: open-hearth, basic-oxygen, or electric furnace. The heat analysis shall conform to the requirements for chemical composition specified.

    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 special quality carbon steel bars. Special quality bar applications include forging, heat treating, cold drawing, machining, and many structural uses. A 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 special quality carbon 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.

    Rephosphorized and Resulfurized Carbon SteelE, G, H










    0.13 max







    0.13 max







    0.13 max







    0.09 max







    0.15 max





    (A) New designations established in accordance with Practice E527 and SAE J 1086.
    (B) Maximum unless otherwise indicated.
    (C) When silicon is required, the following ranges and limits are commonly specified: 0.10 %, max, 0.10 to 0.20 %, 0.15 to 0.35 %, or 0.20 to 0.40 %.
    (D) Copper can be specified when required as 0.20 % minimum.
    (E) When lead is required as an added element to a standard steel, a range of 0.15 to 0.35 % incl is specified. Such a steel is identified by inserting the letter “L” between the second and third numerals of the grade designation, for example, 10 L 45. A cast or heat analysis is not determinable when lead is added to the ladle stream.
    (F) When boron treatment is specified for killed steels, the steels can be expected to contain 0.0005 to 0.003 % boron.
    (G) The elements bismuth, calcium, selenium, or tellurium may be added as agreed between purchaser and supplier.
    (H) It is not common practice to produce these steels to specified limits for silicon because of its adverse effect on machinability.

    1.3 Merchant quality hot-wrought carbon steel bars are covered in Specification A575.

    1.4 Some end uses 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.

    1.5 The values stated in inch-pound units are to be regarded as standard.

    1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

    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 General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought

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

    A575 Specification for Steel Bars, Carbon, Merchant Quality, M-Grades

    E45 Test Methods for Determining the Inclusion Content of Steel

    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 30263600(Carbon steel bars)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/A0576-17

    Citation Format

    ASTM A576-17, Standard Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality, ASTM International, West Conshohocken, PA, 2017, www.astm.org

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