Professional Manufacturer HastelloyC22 / UNS N06022 Tube, Plate, Rod

Short Description:

Equivalent grade:
UNS N06022
DIN W. Nr. 2.44602

Product Detail

Product Tags

Available Products

Seamless tube, Plate, Rod, Forgings, Fasteners, strip, Wire, Pipe Fittings

Chemical Composition

% Ni Cr Mo Fe W Co C Mn Si V P S
C22 min balance 20.0 12.5 2 2.5              
  max 22.5 14.5 6 3.5 2.5 0.015 0.5 0.08 0.35 0.02 0.02

Physical Properties


8.9 g/cm3


1325-1370 ℃

Minimum mechanical properties of Hastelloy C-22 alloy at room temperature

Alloy Rm N/mm2 RP0.2N/mm2 A5 %
Hastelloy C22 690 283 40

Alloy properties

Hastelloy C22 alloy has good resistance to pitting corrosion, crevice corrosion and stress corrosion cracking. It has excellent resistance to oxidative aqueous media including wet chlorine, nitric acid or a mixture of oxidative acids containing chloride ions. At the same time, Hastelloy C22 alloy also has ideal resistance to reducing and oxidizing environments encountered in the process. Relying on this versatile performance, it can be used in some troublesome environments, or in a variety of production purpose factories. Hastelloy C22 alloy has exceptional resistance to a variety of chemical environments, including strong oxidizing substances such as ferric chloride, cupric chloride, chlorine, thermally polluted solutions (organic and 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 precipitation in the welding heat affected zone, which makes it suitable for many chemical process applications in the welded state.

Metallographic structure

Hastelloy C22 has a face-centered cubic lattice structure.

Corrosion resistance

Hastelloy C22 alloy is suitable for various chemical process industries containing oxidizing and reducing media. The higher molybdenum and chromium contents make the alloy resistant to chloride ions, and the tungsten element further improves its corrosion resistance. Hastelloy C22 is one of only a few materials resistant to corrosion in wet chlorine, hypochlorite, and chlorine dioxide solutions. copper chloride).

Application field

Hastelloy C22 alloy is widely used in chemical and petrochemical fields, such as components and catalytic systems in contact with chloride-containing organics. This material is especially suitable for use in high temperature, inorganic and organic acids mixed with impurities (such as formic acid and acetic acid), and seawater corrosive environments.

Other application areas

1. Acetic acid/acetic anhydride
2. Pickling
3. Cellophane manufacturing
4. Chlorination system
5. Complex Mixed Acids
6. Rollers of electro-galvanizing tank
7. Expansion bellows
8. Flue gas cleaning system
9. Geothermal Wells
10. Hydrogen fluoride furnace cleaner
11. Incineration cleaner system
12. Nuclear fuel regeneration
13. Insecticide production
14. Phosphoric acid production
15. Pickling system
16. Plate heat exchanger
17. Selective Filtration System
18. Sulfur dioxide cooling tower
19. Sulfonation system
20. Tube heat exchanger
21. Surfacing valve

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