High mechanical strength: Duplex stainless steel is twice as strong as ordinary austenitic stainless steel, which makes it perform better in applications that require higher stress. Excellent corrosion resistance: Due to its unique microstructure, duplex stainless steel has higher corrosion resistance than common stainless steel grades such as 304 and 316, especially in chlorine-containing environments. Good stress corrosion resistance: Duplex stainless steel has high resistance to stress corrosion cracking caused by chloride ions and is suitable for harsh environments such as marine and chemical industries. Low coefficient of thermal expansion: Duplex stainless steels have a lower coefficient of thermal expansion compared to austenitic stainless steels, which is important in applications with large temperature changes.