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1.1 This specification covers carbon steel chain for such applications as railroad cars, construction, industrial uses, load binding, and general purposes other than overhead lifting.
Note 1—This specification does not cover carbon steel chain for sprocket applications.
1.2 Three classes of carbon steel chain are covered:
1.2.1 Grade 30—Proof coil chain.
1.2.2 Grade 43—High test chain.
1.2.3 Grade 70—Transport chain.
1.3 The values stated in either acceptable metric 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.
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
ICS Number Code 77.140.65 (Steel wire, wir ropes and link chains)
UNSPSC Code 31151600(Chains)