GANYEAH GROUP is the leading global stockholder and supplier of ASTM A928 Duplex Stainless Pipe Welding. The company supplies an extensive range of piping products in a variety of high-grade materials including Duplex, Super Duplex, Stainless Steel and other difficult to source grades of material.
Our products are used across numerous industries worldwide, including Oil & Gas, Petrochemical, Nuclear, FPSO, LNG and Water Treatment.
GENERAL DUPLEX STAINLESS STEEL INFORMATION
2205 is the most widely used ASTM A928 Duplex Stainless Pipe Welding/duplex (ferritic/austenitic) stainless steel grade. It finds applications due to both excellent corrosion resistance and high strength. The standard duplex S31803 composition has over the years been refined by many steel suppliers, and the resulting restricted composition range was endorsed as UNS S32205 in 1996. Duplex S32205 gives better guaranteed corrosion resistance, but for much of the Duplex S31803 currently produced also complies with Duplex S32205. 2205 is not generally suitable for use at temperatures above 300ºC as it suffers from precipitation of brittle micro constituents, nor below -50ºC because of its ductile-to-brittle-transition.
DUPLEX APPLICATIONS
Chemical processing, transport and storage,
Oil and Gas exploration and processing equipment,
Marine and other high chloride environments,
Pulp and paper digesters, liquor tanks and paper machines.
Trade Name | UNS | Duplex Industry Specifications | Chemical Composition | Min.Tensile (KSI) | Min.Yield | Elongation |
SAF 2205 | UNS S31803 | ASME SA-182 (F51), SA-240, SA-798, SA-790, SA-815 | C 0.30 max | 90 | 65 | 25 |
SAF 2205 | UNS S32205 | ASME SA-182 (F60), SA-240, SA-798, SA-790, SA-815 | C 0.30 max | 95 | 65 | 25 |
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