254SMO (1.4547, UNS S31254) is an austenitic stainless steel.  254SMO (1.4547, UNS S31254) is a special alloy developed for use in seawater and other aggressive chloride bearing environments. The main features of 254SMO (1.4547, UNS S31254) are as follows.

254SMO (1.4547, UNS S31254) is a special stainless steel with a high resistance to regular and regional corrosion of up to 6 mole%. 254SMO (1.4547, UNS S31254) has been developed especially for the production of petroleum and natural gas marine platforms and paper.

254SMO (1.4547, UNS S31254) KEY FEATURES

• Excellent tingling and crack corrosion resistance
• High overall corrosion resistance
• High voltage corrosion cracking resistance
• Higher strength than traditional austenitic stainless steels
• Good weldability 

254SMO (1.4547, UNS S31254) Chemical Composition (%)

• C : ≤0.020
• Si : ≤0.80
• Mn : ≤1.00
• P : ≤0.030
• S : ≤0.010
• Cr : 20
• Ni : 18
• Mo : 6.1
• N : 0.20
• Cu : 0.7

254SMO (1.4547, UNS S31254) USAGE AREAS

• Seawater cooling, cooling water pipes, ballast water systems, fire extinguishing systems, etc.
• Hydraulic and instrumentation hose ·
• Pulp bleaching plants ·
• Gas cleaning systems ·
• Tanks and pipelines for chemicals with high halogen content

254SMO (1.4547, UNS S31254) SHAPES SUPPLIED

• 254SMO (1.4547, UNS S31254) plate
• 254SMO (1.4547, UNS S31254) sheet
• 254SMO (1.4547, UNS S31254) pipe
• 254SMO (1.4547, UNS S31254) rod
• 254SMO (1.4547, UNS S31254) bar
• 254SMO (1.4547, UNS S31254) wire
• 254SMO (1.4547, UNS S31254) welding wire

254SMO (1.4547, UNS S31254) DEFINITIONS

• UNS S31254
• 4547
• X1CrNiMoCuN20-18-7
• SS 2378
• ASTM A473
• ASTM A182
• ASTM A249, A269 , A312, A358, A409

254SMO (1.4547, UNS S31254) STANDARD AND NORMS

• 254SMO (1.4547, UNS S31254) plate
• 254SMO (1.4547, UNS S31254) sheet
• 254SMO (1.4547, UNS S31254) pipe
• 254SMO (1.4547, UNS S31254) rod
• 254SMO (1.4547, UNS S31254) bar
• 254SMO (1.4547, UNS S31254) wire
• 254SMO (1.4547, UNS S31254) welding wire