Hastelloy C-22 is extremely resistant to corrosion in oxidizing and reducing environments. C-22 has shown an outstanding resistance to a wide range of chemicals, including chlorides, organic and inorganic solutions.
In addition to having exceptional corrosion resistance, Hastelloy C-22 can also be readily fabricated. It exhibits superior welding conditions, providing excellent as-welded conditions for process applications in chemical-based industries such as food, beverage, personal care, and pharmaceutical.
Hastelloy C-22 | |||||||||||||
Chemical Composition | |||||||||||||
Alloy | % | Ni | Cr | Mo | Fe | W | Co | C | Mn | Si | Pb | P | S |
C22 | min | remiander | 20.0 | 12.5 | 2 | 2.5 |
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max | 22.5 | 14.5 | 6 | 3.5 | 2.5 | 0.015 | 0.5 | 0.08 | 0.35 | 0.02 | 0.02 | ||
Physical Performance | |||||||||||||
Density | 8.9g/cm3 | ||||||||||||
Melting Point | 1325-1370℃ | ||||||||||||
Minimum value of mechanical properties at room temperature
Alloy & State | Strength of extension | Yield Strength | Ductility |
Solution-anneal | 690 | 283 | 40 |
Hastelloy C-22 characteristics:
Hastelloy C-22 alloy are versatile nickel-chromium-molybdenum-tungsten alloys, which have better overall anti-corrosion properties than other existing nickel-chromium molybdenum alloys, including C-276, C4 alloy and 625 alloy. The alloy has good corrosion resistance, crevice corrosion and stress corrosion cracking ability.
It has excellent antioxidant capacity, including wet chlorine, nitric acid or a mixture of oxidizing acids containing chloride ions. At the same time, the alloy also has the ideal resistance process to meet the reduction and oxidative environment capacity.
Depending on this versatility, he can be used in some troublesome environments, or in factories with multiple production purposes. Alloy has abnormal resistance of various chemical environment, including strong oxidizing substances.
Such as ferric chloride, copper chloride, chlorine, thermal pollution solution (organic, inorganic), formic acid, acetic acid, acetic anhydride, water and salt solution, etc. The alloy has the ability of resisting grain boundary precipitation in the welding heat affected zone, so that it can adapt to the application of many chemical processes in the welding state.
Hastelloy C-22 structure: face centered cubic lattice.
Hastelloy C-22 Corrosion Resistant:
Alloys are suitable for various chemical process industries containing oxidation and reducing rings. The higher molybdenum and chromium content enables the alloy to resist the chloride ion and the tungsten element further enhances its corrosion resistance.
Hastelloy C-22 is one of the several to be able to resist the corrosion of wet chlorine, hypochlorite and chlorine dioxide solution is one of the material, the alloy of high concentrations of chlorate solution with a remarkably corrosion resistance (such as ferric chloride and copper chloride).
The corrosion resistance of this alloy renders it suitable for many industrial applications, including, among others, electro-galvanizing rolls, flue gas scrubber systems, nuclear fuel processing, phosphoric acid production and sulfur dioxide cooling towers.
Hastelloy C-22 Application：
Acetic acid, acetic anhydride
Acid leaching
Cellophane manufacture
Chlorination system
Complex mixed acid
A roller for a galvanizing bath
Expansion bellows
Smoke cleaner system
Geothermal well
Hydrogen fluoride furnace cleaner
Incinerator system
Blanketing
Pesticide production
Phosphoric acid production
Pickling system
Plate heat exchanger
Selective filtration system
Sulfur dioxide cooling tower
Sulfonated system
Tubular heat exchanger
The valve surfacing
Spot delivery, including delivering small batches of goods
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Cutting plates, including complex shapes of materials and special processing and disposal
Cutting bars and strips
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