Duplex steel sheets are flat rolled products made from duplex stainless steel, featuring a balanced microstructure of austenite and ferrite. This dual-phase structure gives them superior mechanical strength and excellent corrosion resistance compared to standard austenitic stainless steels. Common grades include Duplex 2205 (UNS S32205) and Super Duplex 2507 (UNS S32750), which are known for their outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking, especially in chloride-rich and marine environments.
These sheets are widely used in chemical processing, oil and gas platforms, pressure vessels, desalination plants, and marine structures due to their high strength-to-weight ratio and durability. Duplex steel sheets are easily weldable and formable, and they conform to specifications such as ASTM A240 and ASME SA240. Their excellent thermal conductivity, high fatigue strength, and long service life make them ideal for demanding structural and corrosive applications.
