Stainless Steel Alloy 2205

Alloy 2205 is a ferritic-austenitic stainless steel used in situations that demand good corrosion resistance and strength. Also referred to as Grade 2205 Duplex, Avesta Sheffield 2205, and UNS 31803, some of the more critical design features of Alloy 2205 include:

  • High resistance to stress corrosion cracking, fatigue, and erosion
  • Higher heat conductivity and lower thermal expansion compared to austenitic steels
  • Outstanding and uniform resistance to pitting and crevice corrosion
  • Good sulfide stress corrosion cracking resistance
  • Useful up to 600°F

Because of this unique set of benefits, Alloy 2205 is the perfect choice for a wide variety of industries. Some typical applications include:

  • Heat exchangers, tubes, and pipes for the oil and gas, and desalination industry
  • Pressure vessels for chemical and chloride processing and transport
  • Cargo tanks, piping, and welding consumables for chemical tankers

To reach the level of Alloy 2205, a stainless steel compound must contain the following chemicals:

  • Fe 50.0% balance
  • Cr 22-23.0%
  • Ni 4.5-6.5%
  • Mo 3-3.5%
  • Mn 2.0% max
  • Si 1.0% max
  • N 0.14-0.20%

At Continental Steel we distribute Stainless Steel Alloy 2205 in a broad range of forms and sizes such as sheet, coil, plate, and pipe. As with everything we sell, our Alloy 2205 meets various industrial standards from organizations like ASTM, ASME, ISO, UNS, and EN.



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