Girish Mahajan (Editor)

SAF 2205

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SAF 2205, also known as Sandvik SAF 2205, is a Sandvik-owned trademark for a 22Cr duplex (ferritic-austenitic) stainless steel. SAF derives from Sandvik Austenite Ferrite. The nominal chemical composition of SAF 2205 is 22% chromium, 5% nickel, 3.2% molybdenum and other alloying elements such as nitrogen and manganese. The UNS designation for SAF 2205 is S31803/S32205 and the EN steel no. is 1.4462.

Typical properties of SAF 2205 duplex stainless steel are:

  • high resistance to stress corrosion cracking (SCC) in chloride-bearing environments
  • high resistance to stress corrosion cracking (SCC) in environments containing hydrogen sulphide
  • high resistance to general corrosion, pitting corrosion, and crevice corrosion
  • high resistance to erosion corrosion and corrosion fatigue
  • high mechanical strength - roughly twice the proof strength of austenitic stainless steel
  • good weldability

    • References

    SAF 2205 Wikipedia
    (Text) CC BY-SA