Density: 8.9 g/cm³
Equivalent designations:
Hastelloy C22, Inconel 22, Nicrofer 5621, W.Nr. 2.4602
Available products: pipe,tube,bar,rod,wire,sheet,strip,fastener,flange,pipe fittings
Hastelloy C22 alloy is a versatile nickel-chromium-molybdenum-tungsten alloy with excellent resistance to pitting, crevice corrosion and stress corrosion cracking. It has excellent resistance to oxidizing aqueous media, including wet chlorine, nitric acid or oxidizing properties containing chloride ions. Acid mixed acid. At the same time, Hastelloy C22 alloy also has the ideal resistance to the reducing and oxidizing environment encountered in the process. Hastelloy C22 alloy has exceptional resistance to a variety of chemical environments, including strong oxidizing substances such as ferric chloride, copper chloride, chlorine, hot contaminated solutions (organic inorganic), formic acid, acetic acid, acetic anhydride, seawater and Salt solution, etc. Hastelloy C22 alloy has the ability to resist the formation of grain boundary precipitates in the heat affected zone of the weld, so that it can adapt to many chemical process applications under welding conditions.
Chemical composition:
|
Grade
|
Componente químico % | |||||||||||
| C | Si | Mn | S | P | Ni | Cr | Mo | Fe | Co | W | V | |
| Hastelloy C22 | Max 0.015 | Max 0.08 | Max 0.5 | Max 0.02 | Max 0.02 | Bal | 20.0-22.5 | 12.5-14.5 | 2.0-6.0 | Max 2.5 | 2.5-3.5 | Max 0.35 |
Metallographic structure of Hastelloy C-22: face-centered cubic lattice structure.
Mechanical properties of Hastelloy C-22:
| Material | TS | YS | EL |
| Rm N/mm2 | RP0.2N/mm2 | A5 % | |
| Hastelloy C22 | Min 690 | Min 283 | Min 40 |
Hastelloy C22 alloy is suitable for chemical process industries with redox and reductive media. Higher molybdenum and chromium content makes the alloy resistant to chloride ion corrosion, and tungsten element further improves its corrosion resistance. Hastelloy C22 is one of the few materials that can resist the corrosion of wet chlorine, hypochlorite and chlorine dioxide solution. The alloy has remarkable corrosion resistance to high concentration chloride solution (such as ferric chloride and copper chloride).
Hastelloy C-22 has a wide range of applications:
Hastelloy C22 alloys have been widely used in chemical and petrochemical fields, such as in components and catalytic systems that are exposed to chlorinated organic compounds. This material is especially suitable for high temperature, mixed with impurities of inorganic acids and organic acids (such as formic acid and acetic acid), seawater corrosion environment.
Other applications: Acetic acid/acetic anhydride, Acid leaching, Glass Paper Manufacturing, Chlorination system, Complex mixed acids, Rollers in galvanizing bath, Expansion bellows, Flue Gas Cleaner System, Geothermal wells, Hydrogen fluoride furnace cleaner, Incinerator Cleaner System, Nuclear fuel regeneration, Pesticide production, Phosphoric acid production, pickling system, Plate heat exchanger, Selective filtration system, Sulfur dioxide cooling tower, Sulfonation system, Tube heat exchanger, Surfacing Valve.
Welded pipe/tube
Seamless pipe/tube
Pipe fittings
Flanges
Bar/Profiles
Sheet/ Plate/Coil/Strip
Wire/Wire rope
Forgings
Welding Rod
Fastener
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