FERRALIUM® alloy 255 (UNS S32550) Fe 62, Cr 25.5, Ni 5.5, Mo 3.4 Cu 2.0, Mn 1.6, Si 0.7, N 0.2 Duplex alloy with a high strength to weight ratio, with superior abrasion and cavitation resistance. Resistance to chloride SCC, as well as crevice corrosion and pitting. Good ductility with a high fatigue strength in marine applications. Twice the yield strength of Alloy 20, and stronger than Duplex 2205. An excellent 40°C critical pitting temperature (ASTM G48-Method A), twice that of Alloy 2205.
Valves, pumps, shafts, marine environments, Applications in down-hole, waste water, polycarbonate production, and dematerialized water production.