Stainless Steel Alloy Duplex 2202, DX2202

Duplex 2202, or DX2202, is an austenitic-ferritic stainless steel. It offers users general resistance to corrosion that is comparable to Type 304L. Some of the other key characteristics of Duplex 2202 include:

  • Improved mechanical strength
  • Service temperature range of -50 °C to 300°C
  • Stress corrosion resistance that is often double other austenitic stainless steels
  • Can be used in combination with nitric acid

Due to these and other benefits, Duplex 2202 is used in a wide variety of critical industrial application including:

  • Construction applications such as crash barriers and footbridges
  • Oil tanks
  • Automotive structure
  • Desalination
  • Pulp and Paper tanks
  • Juice tanks
  • Drinking water systems

In order for a stainless steel to qualify as Duplex 2202, it must have a certain chemical composition that includes:

  • Cr 23%
  • Ni 2.5%
  • Mn 1.30%
  • Mo <0.30%
  • N 0.20%
  • C 0.025% max

Continental Steel supplies our customers with Duplex 2202 in a number of different forms including sheets, blanks, and strips. As with everything Continental Steel sells, the Duplex 2202 complies with a number of different international standards including UNS and ASTM.

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