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Hastelloy C-276 (UNS N10276) Alloy: Properties and Applications

Hastelloy C-276, also known by its UNS designation N10276, is a nickel-molybdenum-chromium superalloy renowned for its exceptional resistance to corrosion and high-temperature stability. This alloy is widely used in industries where harsh environments demand materials with superior performance. Below, we explore the key properties and applications of Hastelloy C-276.

Key Properties of Hastelloy C-276

Hastelloy C-276 exhibits a unique combination of mechanical and chemical properties, making it ideal for demanding applications. Some of its notable characteristics include:

  • Corrosion Resistance: The alloy offers outstanding resistance to a wide range of corrosive media, including oxidizing and reducing acids, chlorides, and seawater.

  • High-Temperature Stability: It maintains excellent mechanical properties at elevated temperatures, making it suitable for use in extreme environments.

  • Weldability: Hastelloy C-276 can be welded using conventional techniques without significant loss of corrosion resistance.

  • Versatility: Its balanced composition ensures performance in both chemical processing and industrial applications.

Applications of Hastelloy C-276

Due to its robust properties, Hastelloy C-276 is employed in various industries, including:

  • Chemical Processing: Used in reactors, heat exchangers, and piping systems exposed to aggressive chemicals.

  • Oil and Gas: Ideal for components in sour gas environments and offshore platforms.

  • Pollution Control: Utilized in flue gas desulfurization systems and waste treatment plants.

  • Pharmaceuticals: Preferred for equipment requiring high purity and resistance to corrosive cleaning agents.

Comparison with Hastelloy X

While Hastelloy C-276 excels in corrosive environments, Hastelloy X (UNS N06002) is another high-performance alloy designed for extreme heat resistance. Hastelloy X is often used in gas turbine components and aerospace applications, whereas C-276 is favored for its corrosion resistance in chemical processing.

Conclusion

Hastelloy C-276 (UNS N10276) is a versatile and reliable alloy that meets the demands of industries operating in corrosive and high-temperature environments. Its exceptional properties ensure longevity and performance, making it a preferred choice for critical applications worldwide.