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 applications 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 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.