1. Yield strength is higher than stainless steel and enough ductility and toughness. The thickness of pressure vessel by made in duplex steel is lower 30%-50% than ordinary stainless steel. To lower costs
2. Better Resistance to stress corrosion cracking ability.
3. In many media, corrosion resistance is better than 316L austenitic stainless steel, for super duplex steel, it have more higher corrosion resistance, such as Acetic acid, formic acid, super duplex steel can replace high alloy austenitic stainless steel. Even corrosion resistant alloy.
4. Corrosion resistance and fatigue corrosion resistance is better than stainless steel
5. linear expansion factor is lower than stainless steel. Approaching to carbon steel. Which can contact with carbon steel
6. Higher Energy absorption capacity than stainless steel under dynamic load or static load, this structure good advantage for impact, explosion