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.