Stainless Steel UNS S31254

Stainless Steel UNS S31254 is an austenitic super duplex with approximately 6% molybdenum, which has excellent workability and weldability. UNS S31254 offers excellent resistance to pitting and stress corrosion cracking. Its resistance to crevice corrosion and general corrosion in seawater is particularly good. UNS S31254 also shows excellent ductility and impact strength.

West Special Fasteners are manufacturers of Stainless Steel UNS S31254 Fasteners.

Stainless Steel UNS S31254 Fasteners such as Studs, Studbolts, Bolts, Nuts, Socket Capscrews, Washers, Socket Setscrews, Socket Countersunk screws & bespoke machined components or Hot Forged items can all be produced at West Special Fasteners Limited.

We can also supply round bar in Stainless Steel UNS S31254.

Stainless Steel UNS S31254 is used in environments where corrosion resistance is needed. This would include seawater cooled power plants, such as nuclear facilities and offshore parts. Its use is also favourable in the chemical industry as UNS S31254 offers good resistance to acids containing chloride ions and even pure acids.

West Special Fasteners specialises in exotic metals and have supplied major UK companies with Stainless Steel UNS S31254 bolts, nuts etc.

We look forward to helping with your Stainless Steel UNS S31254 requirements and would welcome any enquiries by telephone on + 44 (0)1246 291111 or email

Typical Chemical Analysis

C Si Mn P S Cr Ni Mo
0.020 0.800 1.000 0.030 0.010 19.5-20.5 17.5-18.5 6.0-6.5
W N2 Nb Ti Co Cu Al B
V Fe Mg Ta Nb + Ta Ca O2 Bi
Se Sn Zn Pb

Typical Mechanical Properties

Tensile Strength: 650N/mm² Min Impacts:
0.2% Proof Stress: 300N/mm² Min
Elongation: 35% Stress Rupture:
Reduction of Area: 50%
Other Remarks: