Hastelloy C-22

Hastelloy C-22, a nickel-based super corrosion-resistant alloy, is a standout material in the world of high-performance alloys. Developed with elements such as chromium (Cr), molybdenum (Mo), iron (Fe), cobalt (Co), and tungsten (W), this alloy offers exceptional resistance in both oxidizing and reducing environments. Dong-A Special Metals, Inc. supplies and recycles Hastelloy C-22 Solid forms including bar, sheet, and pipe for various industrial uses.


Exceptional Corrosion Resistance and Industrial Applications


Hastelloy C-22 Solid is highly resistant to pitting, crevice corrosion, and stress corrosion cracking. It thrives in environments involving strong acids, mixed chemical exposure, and thermal stress. These properties make it ideal for use in:

- Multi-stage petroleum refineries

- Acid recovery plants

- Semiconductor wet processes

- Pharmaceutical reactors

- Caustic soda and chlorine gas production

Its higher chromium content, compared to C-276, ensures better performance against oxidizing agents. Heat-treated under solubilization conditions at 1120 to 1175°C and followed by rapid cooling, the alloy achieves a stable microstructure with excellent machinability.


Hastelloy C-22 Solid's mechanical properties offer a good balance of tensile strength and ductility. It is commonly used in high-value components such as heat exchangers, valves, pump housings, and precision piping systems across the chemical, marine, semiconductor, and petrochemical industries.


High Recycling Value and Strategic Metal Composition

Hastelloy C-22 contains strategic metals such as nickel, molybdenum, chromium, and tungsten, all of which are in high demand and maintain stable prices in the secondary market. Its scrap, whether from machining or dismantled equipment, can be remelted and purified through high-temperature processing.


Dong-A Special Metals has advanced recycling technologies to recover these rare metals, offering high-purity secondary raw materials. The high unit price of Hastelloy C-22 scrap ensures profitable returns, making it an economically viable material for refining and metal recovery industries.


With its durability, corrosion resistance, and recyclable value, Hastelloy C-22 Solid continues to be a premium material in harsh industrial applications.



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2) Kor : https://blog.naver.com/dongaspecial/223683558947

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2) Kor : https://blog.naver.com/dongaspecial/223683546036

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