ASTM A973 / A973M - 07(2012)

    Standard Specification for Grade 100 Alloy Steel Chain

    Active Standard ASTM A973 / A973M | Developed by Subcommittee: A01.27

    Book of Standards Volume: 01.05


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    Abstract

    This specification covers Grade 100 heat-treated alloy steel chain for such applications as slings, lifting assemblies, and load binding. The alloy steel shall be fully killed and have an austenitic grain size of five or finer. The steel shall be made by the electric welding or gas welding process. After welding, alloy steel chain shall be heat treated before applying the proof test. Heat and product analysis shall be performed and shall meet the required chemical composition in carbon, phosphorus, and sulfur. All chain shall be tested to at least the proof load and breaking force test specimen shall consist of a length from the lot containing at least the number of links. All chain shall be in the quenched and tempered condition before the elongation is measured.

    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.

    Significance and Use

    1. Scope

    1.1 This specification covers Grade 100 heat-treated alloy steel chain for such applications as slings, lifting assemblies, and load binding.

    Note 1This specification does not cover alloy steel chain for pocket wheel applications.

    1.2 This specification is a performance standard for Grade 100 chain used between −20 and 400°F [−29 and 205°C]. The chain manufacturer should be contacted for use at temperatures outside this range.

    1.3 The Grade designation is 1/10 of the minimum breaking strength in newtons divided by two times the nominal cross-sectional area of the chain in square millimetres.

    1.4 The values stated in either SI units or in other units shall be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without combining values in any way.


    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

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

    A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys

    SAE Standard

    SAEJ422 Microscopic Determination of Inclusions in Steels Available from Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15096.


    ICS Code

    ICS Number Code 77.140.65 (Steel wire, wir ropes and link chains)

    UNSPSC Code

    UNSPSC Code 24101600(Lifting equipment and accessories)


    DOI: 10.1520/A0973_A0973M-07R12

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