• Duplex Stainless Steels

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Duplex Stainless Steels

Here at NeoNickel we have a range of Duplex Stainless Steels to suit a range of applications and industries.

Outstanding Range of Features

Duplex Stainless Steels have increased in popularity of the past decade, this is due to their outstanding features:

  • Higher strength leading to weight saving
  • Greater corrosion resistance particularly stress corrosion cracking
  • Better price stability
  • Lower price

History of Duplex Stainless Steels

The idea of duplex stainless steels dates back to the 1920s with the first cast being made at Avesta in Sweden in 1930. However, it is only in the last 30 years that duplex steels have begun to “take off” in a significant way. This is mainly due to advances in steelmaking techniques particularly with respect to control of nitrogen content.

Summary of Characteristics

  • Twice design strength of austenitic and ferritic stainless steels
  • Wide range of corrosion resistance to match application
  • Good toughness down to minus 80 °C but not genuine cryogenic applications
  • Particular resistance to stress corrosion cracking
  • Weldable with care in thick sections
  • More difficult to form and machine than austenitics
  • Restricted to 300 °C maximum

To learn more about our Duplex Alloys and Duplex Stainless Steels click here or contact us today, we’ll be happy to help!