Hastelloy B2 (UNS N10665) is a nickel-molybdenum alloy known for its exceptional resistance to various types of corrosion, especially in reducing environments. It belongs to the Hastelloy family of alloys, which are designed to provide excellent corrosion resistance and high-temperature strength in challenging conditions.
Hastelloy UNS N10665 Chemical Composition:
Nickel (Ni): Approximately 65%
Molybdenum (Mo): Approximately 28 - 32%
Iron (Fe): Maximum of 2%
Chromium (Cr): Maximum of 1%
Other trace elements: Small amounts of carbon, silicon, cobalt, sulfur, and other elements.
Hastelloy B2 UNS N10665 Key Features:
1. Corrosion Resistance: Hastelloy B2 is particularly known for its exceptional resistance to a wide range of corrosive environments, including strong acids, sulfuric acid, hydrochloric acid, and other aggressive chemicals. It performs well in reducing conditions, making it suitable for applications where corrosion resistance is critical.
2. Uniform Corrosion: The Hastelloy B2 UNS N10665 exhibits uniform corrosion resistance, which means it resists corrosion evenly across its surface, even in aggressive environments.
3. High-Temperature Resistance: Hastelloy B2 maintains its mechanical properties and corrosion resistance at elevated temperatures, making it suitable for high-temperature applications.
4. Weldability: Hastelloy B2 is readily weldable using various welding techniques, and it retains its corrosion resistance in the welded area when proper welding procedures are followed.
5. Fabrication: The alloy UNS N10665 can be fabricated using standard techniques, including hot and cold working, as well as machining and forming.
6. Applications: Hastelloy B2 (UNS N10665) is commonly used in applications such as chemical processing, agrochemical production, waste treatment, pharmaceutical manufacturing, and more. It is ideal for environments with aggressive chemicals and reducing conditions.
Limitations:
While Hastelloy B2 offers excellent corrosion resistance, it may not be suitable for use in oxidizing environments with high levels of oxidizing agents such as nitric acid.
