ASTM A311 / A311M - 04(2020)

    Standard Specification for Cold-Drawn, Stress-Relieved Carbon Steel Bars Subject to Mechanical Property Requirements

    Active Standard ASTM A311 / A311M | Developed by Subcommittee: A01.15

    Book of Standards Volume: 01.05


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    Abstract

    This specification covers cold-drawn, stress-relieved carbon steel bars subject to mechanical property requirements. The bars are furnished in two classes, A and B. Class A are normal-draft cold-drawn and stress-relieved rounds, squares, hexagons, and flats. Class B are heavy-draft cold-drawn and stress-relieved rounds and hexagons. The steel shall be made by one or more of the following primary processes: open-hearth, basic-oxygen, or electric-furnace. The cast or heat analysis shall conform to the chemical composition requirements specified. Tension test shall be made to conform to the requirements 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 two classes, nine grades, and four conditions of stress-relieved cold-drawn carbon steel bars produced to mechanical property requirements. One class, B, is cold drawn with higher than normal (heavy) drafts to provide higher strength levels, and four grades provide improved machinability.

    1.2 Supplementary Requirements, S1 through S6, of an optional nature are provided.

    1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

    1.4 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

    A108 Specification for Steel Bar, Carbon and Alloy, Cold-Finished

    A370 Test Methods and Definitions for Mechanical Testing of Steel Products

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

    Other Standard

    SAE J1086


    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/A0311_A0311M-04R20

    Citation Format

    ASTM A311 / A311M-04(2020), Standard Specification for Cold-Drawn, Stress-Relieved Carbon Steel Bars Subject to Mechanical Property Requirements, ASTM International, West Conshohocken, PA, 2020, www.astm.org

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