ISO 8539:2009 – Forged Steel Lifting Components for Use with Grade 8 Chain is an international standard that defines the general requirements for forged steel lifting components designed to be used with Grade 8 chain systems. These components are commonly incorporated into chain slings and lifting assemblies used in industrial lifting, rigging, and material-handling applications. The standard applies to components with a working load limit (WLL) of up to 63 tonnes and is intended to ensure consistent strength, reliability, and safety during lifting operations.
ISO 8539:2009 outlines key technical requirements including material selection, forging processes, heat treatment, dimensional tolerances, and mechanical performance criteria. It also specifies requirements for proof testing, inspection procedures, marking, and traceability so that lifting components can be correctly identified and verified for safe use. By establishing uniform manufacturing and testing practices, the standard helps ensure compatibility with Grade 8 lifting chains and promotes reliable performance under demanding load conditions.
The standard specifically applies to mechanically forged steel components and excludes hand-forged items, welded links, and welded lifting components. It is widely used by manufacturers, inspectors, and safety professionals to ensure lifting equipment meets recognised international safety and quality benchmarks.
You can view or purchase the full ISO 8539:2009 standard here