Hastelloy C-22
Hastelloy C-22 is an all-around nickel-chromium-molybdenum-tungsten alloy with better overall corrosion resistance than other existing nickel-chromium-molybdenum alloys, including Hastelloy C276, C4 alloy and 625 alloy.
Content
Chemical composition of Hastelloy C-22(%)
| Element | Minimum(%) | Maximum(%) |
|---|---|---|
| Ni | remiander | remiander |
| Cr | 20 | 22.5 |
| Mo | 12.5 | 14.5 |
| Fe | 2 | 6 |
| W | 2.5 | 3.5 |
| Co | - | 2.5 |
| C | - | 0.015 |
| Mn | - | 0.5 |
| Si | - | 0.05 |
| V | - | 0.35 |
| P | - | 0.02 |
| S | - | 0.02 |
Applications of Hastelloy C-22
- Hastelloy C22 alloy has been widely used in the chemical and petrochemical fields, such as in components and catalytic systems that come into contact with chloride-containing organic matter. This material is particularly suitable for use in high temperature, inorganic and organic acids mixed with impurities (such as formic acid and acetic acid), and seawater corrosion environments.
- Acetic acid/acetic anhydride
- Acid leaching
- Cellophane manufacturing
- Chlorination system.
- Complex mixed acids
- Rollers for electrogalvanizing tanks
- Expansion bellows
- Flue gas scrubber systems
- Geothermal wells
- Hydrogen fluoride furnace scrubbers
- Incineration scrubber systems
- Nuclear fuel regeneration
- Pesticide production
- Phosphoric acid production
- Pickling systems
- Plate heat exchangers
- Selective filtration systems
- Sulfur dioxide cooling towers
- Sulfonation systems
- Tubular heat exchangers
- Overlay valves
