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ASTM A182 UNS S31050 is a high alloy austenitic stainless steel forging with urea grade strong corrosion resistance and high temperature strength. It is a low-carbon, molybdenum nitrogen optimized version of 310 stainless steel.
Mechanical properties of S31050 (solid solution state, room temperature):
Tensile strength ≥ 540 MPa, yield strength (0.2%) ≥ 255 MPa, elongation ≥ 25%; Hardness HB ≤ 220, fully austenitic structure, ferrite controlled at an extremely low level (often<0.5%), good toughness;
The main form of supply for S31050 according to A182 is:
Forged flanges, butt welded/socket welded fittings, valve discs/seats, bolts/nuts, integral forgings; Can be processed into components for various high-pressure and high-temperature corrosion conditions. The production process is electric furnace+refining (AOD/VOD) → forging → solution heat treatment → non-destructive testing (UT/MT) → machining.
S31050, also known as F310MoLN, 1.4466, X1CrNiMoN25-22-2, is mainly used in the urea industry, petrochemicals, environmental energy, pharmaceuticals, and papermaking as corrosion-resistant and heat-resistant equipment.
