Duplex Stainless Steel

Written by Jerry Ratzlaff on . Posted in Stainless Steel

Duplex stainless steels normally contain 22-25% chromium and 5% nickel with molybdenum and nitrogen.


  • Magnetic
  • Non hardenable by heat treatment
  • Contains both austenite and ferrite
  • High strength
  • Resistant to chloride stress corrosion cracking
  • Subject to hydrogen embrittlement
  • Subject to ductile brittle temperature embrittlement
  • Easy to weld


SAF 2101, SAF 2205, SAF 2304, SAF 2507, SAF 2507Cu


  • DDS - duplex stainless steel