Alloy 254 SMO is a very high end, molybdenum and nitrogen alloyed super austenitic stainless steel with low carbon content. It demonstrates outstanding resistance to pitting, crevice corrosion stress cracking, and corrosion fatigue uniform corrosion.

Types Of SMO 254:




SMO 254 Pipe

It is resistant to pitting and crevice corrosion and also has a strong resistance to chloride stress corrosion cracking. 254 Smo Seamless Pipe is used in petroleum production, saltwater handling, and food processing industries. They are also used in the pulp and paper industry in bleaching equipment.

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Diameter 5mm~ 500 mm
Wier Range 1/2″ to 100″
Standards ASTM A312, A269, A213, A249, A358
Length Single Random, Double Random, and Cut Length
Finish Bright, Polish, and Black
Form Round, Square, Rectangular, Hydraulic Etc.
Grades UNS No. S31254


SMO 254 Tube

SMO 254 Welded Pipes is a very high end, molybdenum and nitrogen alloyed super austenitic stainless steel with low carbon content. SMO 254 EFW Pipes is an austenitic stainless steel with high molybdenum content. SMO 254 ERW Pipes is often used in Flue – gas cleaning, Desalination, Heat exchangers, and more.

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Diameter 5mm~ 500 mm
Wier Range 1/2″ to 100″
Standards ASTM A312, A269, A213, A249, A358
Length Single Random, Double Random, and Cut Length
Finish Bright, Polish, and Black
Form Round, Square, Rectangular, Hydraulic Etc.
Grades UNS No. S31254

SMO 254 Plate

Alloy 254 SMO is used in particular in areas requiring resistance to chlorinated seawater, as well as in flue gas cleaning, maritime exhaust gas cleaning (EGC), bleaching plants in the pulp and paper industry and in the chemical industry.

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Specification ASTM A240/ ASME SA240 254 SMO Plate Stock Available
Grade A240 UNS S31254
Thickness 7 gauge to 28 gauge or 3.664mm to .321mm
Width Range 30" to 240"
Length Range Up to144" Non-Standard or Longer Lengths Available Upon Request
Finishes 2D, 2B, 4Pol, BA, X10, XL, Buff, XL Blend S, SATIN (Met with Plastic Coated), NO(8), Hairline, NO.1, NO.4, Mirror Finish
Form Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange)