2205 is the most widely used duplex stainless steel, combining the benefits of austenitic and ferritic structures. It provides excellent resistance to stress corrosion cracking and high mechanical strength.
Key Properties
Duplex Structure: Balanced austenite-ferrite microstructure for toughness.
Corrosion: Good resistance to chlorides and organic acids.
Strength: Yield strength is twice that of 304/316, allowing thinner designs.
Cost: More economical than super duplex grades like 2507.
Common Applications
Chemical Processing: Heat exchangers, pressure vessels, and storage tanks.
Oil & Gas: Flow lines, manifolds, and process piping.
Pulp & Paper: Digesters and bleaching equipment.
Marine: Ship hulls and cargo tanks for chemical tankers.