Hastelloy C276 is a high-performance nickel-based alloy known for its excellent resistance to corrosion in a wide range of aggressive environments. It is commonly used in industries like chemical processing, power generation, and pollution control due to its exceptional resistance to both oxidizing and reducing environments.
Chemical Composition of Hastelloy C276:
| Element | Composition Range |
|---|---|
| Nickel (Ni) | 57.0% minimum |
| Chromium (Cr) | 14.5% to 16.5% |
| Molybdenum (Mo) | 15.0% to 17.0% |
| Iron (Fe) | 4.0% maximum |
| Cobalt (Co) | 2.5% maximum |
| Manganese (Mn) | 1.0% maximum |
| Silicon (Si) | 0.08% maximum |
| Carbon (C) | 0.02% maximum |
| Phosphorus (P) | 0.04% maximum |
| Sulfur (S) | 0.03% maximum |
Key Points:
Nickel (Ni): The primary element, providing the alloy with high corrosion resistance, especially to acids, alkalis, and seawater.
Chromium (Cr): Provides resistance to oxidizing environments.
Molybdenum (Mo): Enhances resistance to pitting and crevice corrosion in reducing environments.
Iron (Fe): Present in smaller amounts to balance the alloy composition and add strength.
Cobalt (Co): In small amounts, it contributes to high-temperature stability and corrosion resistance.
Hastelloy C276 is considered one of the most versatile and corrosion-resistant materials for high-temperature and aggressive chemical applications. It is particularly effective against chloride-induced stress corrosion cracking, oxidizing acids, and sulfuric acid.
