The main differences between super duplex steel and duplex steel include the following aspects:

Chemical composition:Super duplex steel contains more metallic elements such as copper (Cu) and nitrogen (N), which help improve the strength, toughness, and corrosion resistance of the material.

Mechanical properties:Due to the addition of copper and nitrogen elements, the mechanical properties such as strength, toughness, and corrosion resistance of super duplex steel are superior to those of duplex steel.

Corrosion resistance:Super duplex steel also exhibits excellent corrosion resistance, especially in fields such as chemical processing, marine environment, and food industry.

Thermal stability:Super duplex steel exhibits superior performance at high temperatures, maintaining high strength and plasticity, which has important advantages in high-temperature processing and use.

Softening and heat treatment characteristics:The softening mechanism of super duplex steel is localized weakening, which means that only some areas will soften, while other areas still maintain high strength.