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Forged Fittings ASTM A182 F51 UNS S31803 Duplex Stainless Steel Coupling B16.11
ASTM A182 F51(UNS S31803) is a duplex stainless steel which has a high resistance to pitting, stress and crevice corrosion, and it also has high mechanical strength and good weldability. ASTM A182 F51(UNS S31803) Duplex Stainless Steel Fittings have better corrosion resistance. They are suitable for the temperature that is above 300ºC because they usually suffer precipitations of brittle micro constituents.
| Specifications | ASTM A182 & ASME SA182 |
| Size | 1/8” NB to 4” NB |
| Standards | ASME 16.11 Socket-welding/Threaded Pipe coupling |
| Class | 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS |
Chemical Composition:
| C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| 0.03 max | 2 max | 1 max | 0.03 max | 0.02 max | 22 – 23 | 3 – 3.5 | 4.5 – 6.5 | 0.14 – 0.2 | 63.72 min |
Mechanical properties:
| Tensile Strength | Yield Strength |
| 90 Ksi - 620MPa | 65 Ksi - 450MPa |
Applications:
Petroleum Industry
Chemical Refinery
Paper & Pulp Companies
Oil and Gas Industry
Boiler & Heat Exchangers
Nuclear Power Plants
Food Processing Industries
