ASTM A304-96

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


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    1. Scope

    1.1 This specification covers hot-worked alloy, carbon, and carbon-boron steels in a variety of compositions and sizes which may attain specified depth of hardening in the end quench test. These steel compositions are identified by the suffix letter "H" added to the conventional grade number.

    1.2 This specification provides for analyses other than those listed under Tables 1 and 2. Special hardenability limits are also permissible when approved by the purchaser and manufacturer.

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

    Society of Automotive Engineers (SAE) Standard

    J1086 Numbering Metals and Alloys

    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

    A255 Test Methods for Determining Hardenability of Steel

    E112 Test Methods for Determining Average Grain Size

    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)

    Referencing This Standard
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    DOI: 10.1520/A0304-96

    Citation Format

    ASTM A304-96, Standard Specification for Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements, ASTM International, West Conshohocken, PA, 2002, www.astm.org

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