Duplex Grades

Duplex stainless steels are extremely corrosion resistant, work hardenable alloys.

Duplex stainless steel plate contains relatively high levels of chromium (between 18% and 28%) and low to moderate amounts of nickel (between 1.5% and 8%).

The high corrosion resistance and excellent mechanical properties of duplex stainless steels can be attributed to their chemical composition and balanced (duplex) microstructure of approximately equal volume percentages of ferrite and austenite.

Because of this duplex nature, it will display properties characteristic of both austenitic and ferritic stainless steels.Duplex stainless steels are in most cases, tougher than ferritic stainless steels. Strengths of duplex stainless steels can in some cases be double that for austenitic stainless steels.

Our subsidiary, Wuxi Tianhong Stainless Steel Co., Ltd., is equipped with the capability to produce duplex stainless steel grades 2205, 2304, and 2507, ensuring reliable supply of high-performance alloys for your specific needs.

Stainless Steel Plate	Plate Mill Plate, Diamond Plate
Stainless Steel Sheet	2B/2D Finish, Polished Sheet, Perforated Sheet, Flat & Expanded
Stainless Steel Bar	Round Bar, Square Bar, Hex Bar, Rolled Flat. Sheared&Edged, Half Round
Stainless Steel Tubular	Seamless Pipe, Welded Pipe, Seamless Tube, Seamless Tube

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