Active Standard ASTM A973 / A973M | Developed by Subcommittee: A01.27
Book of Standards Volume: 01.05
Historical (view previous versions of standard)
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.
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2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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 StandardSAEJ422 Microscopic Determination of Inclusions in Steels Available from Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15096.
ICS Number Code 77.140.65 (Steel wire, wir ropes and link chains)
UNSPSC Code 24101600(Lifting equipment and accessories)