Available Shapes

UNS S31803 Duplex Stainless Steel

Duplex S31803 / F51 / 1.4462, also known as stainless steel grade 2205, is a standardized formulation that conforms to UNS specification regulations. Its temperature range is typically listed as -50° to 300° C (-58° to 572° F); outside of this range, its performance characteristics degrade. Specifically, duplex S31803’s micro-components experience precipitation with prolonged exposure to high temperatures, and ductility suffers from immersion in extremely cold environments.

Its general capabilities include:
Excellent oxidation resistance
Outstanding performance in marine/sea water environments
Low thermal expansion coefficients
High heat conductivity


Related Specifications
1.4462 BS EN 10088-3 ASTM A182 F51 X2CrNiMoN22-5-3

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