ASTM SMO254 UNS S31254 Super Duplex Stainless Steel

Specifications

  ASTM SMO254 UNS S31254 Super Duplex Stainless Steel

254 SMO is an austenitic stainless steel designed for maximum resistance to pitting and crevice corrosion. With high levels of chromium, molybdenum, and nitrogen, 254 SMO is especially suited for high chloride environments such as brackish water seawater pulp mill bleach plants and other high chloride process streams. 254 SMO offers chloride resistance superior to that of Alloy 904L Alloy 20, Alloy 825 and Alloy G. 254 SMO is compatible with the common austenitic stainless steels. It is often used as a replacement in critical components of larger constructions where Type 316L or 317L has failed by pitting, crevice attack, or chloride stress corrosion cracking. In new construction, 254 SMO has been found in many cases to be a technically adequate and much less costly substitute for nickelbased alloys and titanium. 254 SMO is substantially stronger than the common austenitic grades, but is also characterized by high ductility and impact strength. 254 SMO is readily fabricated and welded.

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Stainless steel’s resistance to corrosion and staining, low maintenance and familiar lustre make it an ideal material for many applications. Petroleum,chemical industry,papermaking,electric power, building, foodstuff,pharmacy,biotechnology,nuclear power,areaspace,tableware,cabinets,etc

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