Sep 15 2026
Duplex stainless steel is widely valued for its combination of high strength, excellent corrosion resistance, and good toughness. Grades such as Alloy 2205 and Super Duplex grades such as Alloy 2507 are used in demanding industries including oil and gas, chemical processing, marine engineering, desalination, power generation, and fabrication. However, these materials require careful control during heating, welding, and fabrication because an unwanted metallurgical phase called sigma phase can form under certain conditions.