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254 SMO (CK3MCuN) is a high-alloy austenitic stainless steel developed for use in seawater and other chloride containing fluids. Falcon 254 SMO valves are designed with a combination of high impact toughness resistance to chloride stress corrosion (SCC), and pitting and crevice corrosion with strength that is twice that of SS316/SS304 stainless steel.
Casting Grade : A351 CK3MCuN
Forging Grade : A182 F44
Wrought UNS : S31254
Cast UNS : J93254
Following type of Valves are manufactured by Falcon
Characteristics of 254 SMO valves
254 SMO has a very low carbon content. Pitting resistance equivalent number (PREN) is above 42.5 hence it provides good corrosion resistance in water containing chlorides.
Application of 254 SMO valves