J&J Alloys

J & J Alloys is an industry leading manufacturer of nickel alloy fitting and flanges with a wide array of standard as well as specialty products we are capable of producing.

Duplex 2205


Avesta Sheffield 2205 is a ferritic-austenitic stainless steel which combines many of the beneficial properties of both ferritic and austenitic steels. As a result of high chromium and molybdenum contents, the steel has very good pitting and uniform corrosion resistance, as well as high mechanical strength. 2205 has good weldability and can be welded using most of the techniques for stainless steels. Due to the balanced composition, when welded correctly, the heat-affected zone contains sufficient austenite to avoid risk of localized corrosion.

Typical Applications

  • Heat exchangers, tube & pipe for gas & oil
  • Heat exchangers and pipes in desalination plants
  • Pressure vessels, pipes, & tanks for various chemicals and chlorides
  • Rotors, fans, shafts and press rolls where high corrosion fatigue is needed