Chain made from stainless wire or strip: welded round-link chain for marine, architectural and general rigging work, and roller and conveyor chain for food, beverage and pharmaceutical machinery. Stainless chain resists corrosion and washdown chemicals, but it is generally weaker than alloy lifting chain and must be used within the maker's rated working load limit.
Round-link chain is bent from stainless wire into links and resistance or flash welded shut. Short-link chain (link length about three times the wire diameter, as in DIN 766 and DIN 5685 A) is stiff and strong for its size; long-link chain (DIN 763, DIN 5685 C) is lighter, cheaper and easier to shackle. Calibrated chain is made to tight pitch tolerances so it can run over a pocketed wheel such as an anchor windlass or hoist.
Roller chain for power transmission and conveying is assembled from stainless plates, pins, bushes and rollers to the same dimensions as carbon steel chain — ISO 606 for the European (B) and American (A) series, ASME B29.1 for the American standard — so it fits standard sprockets. Austenitic 304 and 316 parts give the best corrosion resistance; hardened martensitic or precipitation-hardened pins and bushes give better wear life where the environment is milder.
Austenitic stainless is softer than heat-treated alloy steel, so a stainless chain of the same size usually has a markedly lower breaking load and working load limit than an alloy lifting chain. Stainless link chain should only be used for lifting when the maker certifies it for that purpose and marks its working load limit; otherwise it is for securing, anchoring, barriers and decorative use. Duplex and other high-strength grades are used where both strength and seawater resistance are needed.
In the GCC, stainless chain is sold to marinas and the boating industry, to food, beverage and dairy plants for conveyors, to water and desalination plants, and for architectural barriers and signage. It is imported, mostly from Europe and Asia, and distributed by marine and industrial suppliers.
Link chain is ordered by wire diameter × inside link length (pitch) × inside width, the standard, grade and length; roller chain by ISO or ANSI chain number, number of strands, grade and length with connecting links.
| Region | Standard | What it covers |
|---|---|---|
| Germany | DIN 766 DIN |
Round steel link chains, calibrated, for chain hoists and windlasses |
| Germany | DIN 763 DIN |
Round steel link chains, long link, non-calibrated |
| Germany | DIN 5685 DIN |
Round steel link chains, short link (type A) and long link (type C), welded |
| International | ISO 606 ISO |
Short-pitch transmission precision roller and bush chains, attachments and sprockets |
| USA | ASME B29.1 ASME |
Precision power transmission roller chains, attachments and sprockets (ANSI series) |
Grade equivalents and the standards bodies: Steel grades & standards
Steel Mills - Agents & Traders · Stockist - Distributor · Other Steel Users · Sharjah
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