ATI 255™ alloy is a 25% chromium ferritic-austenitic duplex stainless steel designed to provide a superior combination of high strength and excellent corrosion resistance for a wide variety of applications.

The alloy possesses a microstructure which is a balanced mixture of austenite and ferrite. The combination of these phases develops the unique combination of strength and chloride stress-corrosion cracking resistance of this alloy.

The alloy finds application in marine corrosion areas, equipment for phosphoric acid and fertilizer industry, pollution control equipment, the pulp and paper industry and the petrochemical industry.