Duplex Grades

Common Name UNS # Forms Available C Cr Ni Mo Ti Other Typical Applications
2101
……………………
S32101 Sheet, Plate, Bar, Tube, Pile ……………….. 0.03 21 1.5 0.3 0.22N
5Mn
Low alloyed, general purpose duplex stainless steel. Its high mechanical strength is similar to that of other duplex grades and its good corrosion resistance is on par with that of most standard grades of stainless steel. Building and construction, storage tanks, flood gates.
2304 S32304 Sheet, Plate, Pipe & Fittings 0.03 23 4 0.1N Similar corrosion resistance to 316L. Higher yield strength, corrosion and stress corrosion cracking resistance. Used where high corrosion resistance is required in marine, mining, chemical, food and power industries. Particularly useful in nitric acid.
2205 S31803 Plate, Pipe, Bar, Fitting 0.03 22 5.5 3 0.14N Superior corrosion resistance to 316L and 317L, combined with high strength. Excellent stress corrosion and abrasion resistance. Typically used in heat exchangers, gas scrubbers, fans, chemical tanks, flowlines, marine and refinery applications.
2507 S32750 Plate, Pipe, Bar, Fittings 0.03 25 7 4 0.3N Extremely high resistance to corrosion in severe marine, chloride and acid environments. Suitable for heat exchangers, reactors, pipework etc.

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