Nickel alloys
EU
2.4602 - NiCr21Mo14W
US
Alloy 22 - UNS N06022
Alloy 22 is a nickel-chromium-molybdenum alloy that contains tungsten and has extremely low carbon and silicon content.
Hastelloy C276 - UNS N06022 nickel alloy - Available from stock
The 2.4602 alloy, also known by the names Hastelloy C-276 and UNS N06022, is a nickel, chromium and molybdenum-based superalloy, reinforced with added tungsten. This alloy is specially designed to offer excellent corrosion resistance in a wide range of harsh environments.
Technical overviewof this alloy:
- Europe: 2.4602 | NiCr21Mo14W
- USA: Alloy 22 | UNS N06022
- Europe: DIN 17752 | ISO 9724 | ISO 9723 | ISO 6208 | DIN 17750 | DIN 17753 | DIN 17754 | DIN 17751 | ISO 6207
- USA: ASTM B574 | B462 | B575 | B906 | B574 | B564 | B622 | B619 | B829 | B626 | B366
- Excellent corrosion resistance, including pitting corrosion, crevice corrosion, stress corrosion and corrosion in reducing or oxidising environments.
- Good oxidation resistance: means it can be used at high temperatures without significant degradation.
- Resilience in aggressive chemical environments: effective in environments containing acids such as sulphuric acid, hydrochloric acid and phosphoric acid, as well as saline solutions.
- Hastelloy C-276 is generally used in a solution state, where it is heated up then quickly cooled down to ensure a homogeneous structure and maximise corrosion resistance.
Properties
- Excellent corrosion resistance, including pitting corrosion, crevice corrosion, stress corrosion and corrosion in reducing or oxidising environments.
- Good oxidation resistance: means it can be used at high temperatures without significant degradation.
- Resilience in aggressive chemical environments: effective in environments containing acids such as sulphuric acid, hydrochloric acid and phosphoric acid, as well as saline solutions.
Standards and Designations
Heat treatment
- Hastelloy C-276 is generally used in a solution state, where it is heated up then quickly cooled down to ensure a homogeneous structure and maximise corrosion resistance.
Special advantages
Conclusion
Application
- Widely used in the chemical and petrochemical industries, e.g. for reactors, heat exchangers and distilling heads exposed to corrosive conditions.
- Suitable for marine environments, wastewater treatment, and applications involving flue gas desulphurisation where corrosion resistance is essential.
- Hastelloy C-276 is known for its exceptional performance even in extreme conditions, offering reliable protection against corrosion in a range of heavy-duty industrial applications.
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