Description
UNS 32550 - F 61
It is a highly alloyed, super duplex (ferrite-austenite) solid solution strengthened alloy that provides high strength and wear resistance while also providing superior corrosion resistance when compared to 316 stainless steel. It is used in the aerospace industry and is used in the automotive industry. This alloy also exhibits superior resistance to stress corrosion cracking, as well as crevice and pitting corrosion, when compared to lower alloyed materials of similar composition. When selecting alloy F255, it is important to consider the operating temperatures because secondary phases may form at higher temperature ranges. It is possible to form carbides (M23C6), nitrides (M2N), and the sigma phase if the alloy is heat treated and allowed to soak between 1000 °F and 1800 °F for an extended period of time. Alpha prime can be formed at temperatures as high as 900 degrees Fahrenheit. According to Section VIII of the ASME Boiler and Pressure Vessel Code, the maximum continuous operating temperature is 500 degrees Fahrenheit. Combining strength and wear resistance, alloy F255 is well suited for demanding applications in a wide range of industries, including offshore oil and gas, pulp and paper, nuclear power and marine applications, chemical processing, and flue gas desulfurization, among others.
The alloy F255 is a cost-effective option for a variety of applications, including sub-sea equipment for the oil and gas industry, chemical process industry equipment, pollution control scrubbers, marine seals, pumps and valves, bolts and fasteners, grain and vegetable processing equipment, pulp and paper bleaching components, water and sewage treatment and desalination equipment, and a variety of other applications.
