Duplex Stainless Steel

1.Duplex 31254/254 SMD/F52

2.Duplex 31803/ 2205/F51

3.Duplex 32750/2507/F53

4.Duplex 32760/F55

General Characteristics:

Duplex Stainless Steels combine many of the beneficial properties of ferritic and austenitic materials to provide both high strength and good corrosion resistance. Due to their high chromium, molybdenum and nitrogen contents and duplex structure, these steels offer many benefits in comparison to 300 series austenitic grades:

• High Strength – Approximately twice the level of austenitics

• Good resistance to pitting and crevice corrosion

• Excellent resistance to stresscorrosion cracking • Good erosion and fatigue resistance

• Good weldability and increased heat transfer

• More stable pricing due to lower Ni levels than austenitic stainless grades


Due to their high strength and corrosion resistance properties, Duplex Stainless Steels are used in a variety of applications such as:

• Pressure vessels, reactor tanks and heat exchangers

• Desalination plants and seawater systems

• Water transmission pipes

• Rotors, impellers and shafts in industrial equipment

• stock washers and other equipment for the pulp and paper industry

• Absorber towers, FGD systems for air pollution control

• Phosphoric acid production

• Food, oil and gas, mining and architectural applications

• Biofuels plants