Duplex steel plates are flat-rolled products made from duplex stainless steel, which has a balanced microstructure of austenite and ferrite. This dual-phase structure provides superior mechanical strength and outstanding corrosion resistance, especially against stress corrosion cracking, pitting, and crevice corrosion in chloride-rich environments. Common grades include Duplex 2205 (UNS S32205) and Super Duplex 2507 (UNS S32750), both of which offer excellent performance in aggressive industrial applications.
These plates are widely used in the oil and gas, chemical processing, marine, desalination, and pulp & paper industries, where high strength and corrosion resistance are essential. Duplex steel plates conform to standards such as ASTM A240 and ASME SA240, and offer excellent weldability, formability, and fatigue resistance.
