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1.1 This specification covers the requirements and method of rating and testing for alloy chain slings. Slings shall be assembled using components manufactured in accordance with Specification A 391/A 391M for Grade 80 chain, A 973/A 973M for Grade 100 chain, and A 952/A 952M for other components. This specification covers welded and mechanically assembled slings.
1.2 This specification does not cover slings used at elevated temperatures (above 400°F [200°C]), in harmful or corrosive environmental conditions or for applications such as nonsymmetrical legs or loading.
1.3 This specification is a performance and assembly specification. Other standards, such as OSHA 1910.184, ASME B30.9, and ASME B30.10, apply to the use of the products in this specification.
1.4 The values stated in either inch-pound units or SI units shall be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore each system shall 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.
A391/A391M Specification for Grade 80 Alloy Steel Chain
A952/A952M Specification for Forged Grade 80 and Grade 100 Steel Lifting Components and Welded Attachment Links
A973/A973M Specification for Grade 100 Alloy Steel Chain
Other StandardsASMEB30.10 Hooks
ICS Number Code 53.020.30 (Accessories for lifting equipment)