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Duplex steel
Duplex steel combines excellent corrosion resistance with high strength, which is offering superior stress corrosion cracking resistance in chloride solutions, high corrosion resistance to dilute sulphuric acid and phosphoric acid.
The lower nickel and molybdenum content of the Duplex Stainless Steels as compared to the austenitic grades with similar corrosion resistance, gives the Duplex grades a lower cost.
Industrial Processes Applications:
Duplex steel excels in many industrial processes. The following are some of the environments which duplex steel is fully resistant.
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• Ammonium
Bicarbonate
• Ammonium
Bromide
• Ammonium
Carbonate
• Ammonium
Hydroxide
• Ammonium
Oxalate
• Ammonium
Phosphate
• Ammonium Sulfate
• Ammonium
Sulfide
• Ammonium
Sulfite
• Benzoic Acid
• Calcium
Chloride
• Calcium
Hydroxide
• Calcium
Nitrate
• Carbon
Tetrachloride
• Chlorobenzene
• Copper
Acetate
• Copper
Carbonate
• Copper
Cyanide
• Cupric
Chloride
• Ethyl
Chloride
• Gallic Acid
• Magnesium
Carbonate
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• Magnesium
Chloride
• Magnesium
Sulfate
• Malic Acid
• Mercuric
Cyanide
• Mercuric
Nitrate
• Nitric Acid
• Nitrous Acid
• Perchloric
Acid
• Phosphoric
Acid
• Picric Acid
• Potassium
Bromide
• Potassium
Cyanide
• Potassium
Dichromate
• Potassium
Hydroxide
• Potassium
Iodide
• Potassium Oxalate
• Potassium
Permanganate
• Potassium
Sulfate
• Pyrogallic
Acid
• Quinine
Bisulfate (Dry)
• Quinine
Sulfate (Dry)
• Silver
Bromide
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• Silver
Nitrate
• Sodium
Acetate
• Sodium
Bicarbonate
• Sodium
Bisulfate
• Sodium
Bromide
• Sodium
Chlorate
• Sodium
Chlorite
• Sodium
Nitrate
• Sodium
Nitrite
• Sodium
Peroxide
• Sodium
Silicate
• Sodium
Sulfate
• Sodium
Sulfide
• Sodium
Sulfite
• Stannic
Chloride
• Sulfuric
Acid
• Sulfurous
Acid
• Urea
• Zinc
Chloride
• Zinc Sulfate
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Valve Applications
Duplex steel valves mainly apply in neutral
chloride environment and serve many different applications in these industries:
• Chemical
• Petrochemical
• Oil&
Gas
• Pulp
and paper
• Desalination
• LNG (Liquefied Natural Gas)
• Oil
Refining
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