Ferralium® 255 was selected instead of Alloy 316 for gate valves at a UK salt works because of its superior stress corrosion resistance, where the valves were exposed to a 25% solution of saturated brine at up to 150degC.
Langley Gate Valves (a former division of Langley Alloys) supplied gate valves up to 16" in diameter to the salt works.
Ferralium® 255 is also used by valve manufacturers for valve trim, seats, spindles and bolting. It has been successfully used to make stub shafts in large butterfly valves handling seawater and brackish water, exploiting its increased strength as well as its corrosion resistance.
