Duplex steel is composed of 50% austenite and 50% ferrite stainless steel, so it possesses a two phase microstructure of austenitic and ferritic stainless steel. One of the most common form for duplex steel is pipe. This article will talk about the uses of
duplex steel pipe.
Duplex Stainless Steel Pipe Characteristics:
• High yield strength, double that of austenitic or ferritic grades of stainless steel.
• Good ductility, easy to form with approximately 20-30% elongation.
• Good impact strength >-40°C.
• Maximum working temperature of +250°C.
• The high Cr in combination with Ni gives superior resistance to both pitting and crevice corrosion.
• Excellent weldability.
Duplex Stainless Steel Pipe Uses:
Due to its exceptional combination of strength and corrosion resistance, duplex steel is widely used for:
• Chemical processing, transport and storage – pressure vessels, tanks, piping, and heat exchangers
• Oil and gas exploration and processing equipment – piping, tubing, and heat exchangers
• Pulp and paper industry – digesters, bleaching equipment, and stock-handling systems
• Marine and other high chloride environments
• Rotors, impellers and shafts
• Desalination plants
• Waste gas purifiers
• Cargo tanks for ships and trucks
• Food processing equipment
• Biofuels plants
• Pharmaceutical
• Geothermal
• LNG (Liquefied Natural Gas)
• Biomass
• Mining
• Utilities
• Nuclear Power
• Solar Power
