Hastelloy-X

Introduction to Nickel-Based Superalloys and Hastelloy

Nickel-based superalloys are critical materials in modern industry due to their exceptional strength and corrosion resistance under extreme heat. These alloys contain nickel (Ni) as the primary element, with additions of chromium (Cr), molybdenum (Mo), iron (Fe), and cobalt (Co) to enhance their performance. Dong-A Special Metals, Inc. specializes in the recycling and supply of such strategic alloys, supporting industries across Korea and beyond.


Superior Performance of Hastelloy Alloys

Hastelloy is a well-known group of nickel-based alloys that includes grades such as C-22, C-276, C-2000, and X. Among these, Hastelloy C-22 and C-276 offer outstanding resistance to corrosion in both oxidizing and reducing environments. These alloys exhibit low corrosion rates even in aggressive acids like hydrochloric, sulfuric, and phosphoric, and resist localized forms of corrosion such as crevice and pitting.

This makes them essential in power plants for critical components such as piping systems, heat exchangers, and boiler tubes. In thermal power plants, where sulfur and chlorine in exhaust gases accelerate corrosion, Hastelloy C-22 significantly extends equipment lifespan. Similarly, Hastelloy C-276 is trusted in nuclear plants for its durability in radioactive and corrosive conditions.


Aerospace and Chemical Industry Applications

The aerospace industry also benefits from Hastelloy’s high-temperature stability. For instance, Hastelloy X is used in turbine blades, combustion chamber liners, and exhaust systems of aircraft and space launch vehicles. It resists deformation and fatigue under severe thermal stress.

In chemical processing, Hastelloy alloys are indispensable in reactors, tanks, and pipelines handling oxidizing, reducing, or chlorinated compounds. Their chemical and thermal stability ensures product purity and process safety. These alloys support long-term operations even in complex chemical environments.


Advanced Manufacturing and Strategic Importance

Producing Hastelloy requires advanced metallurgy, including vacuum induction melting (VIM), vacuum arc remelting (VAR), and precise heat treatments to optimize microstructure. These techniques ensure consistent corrosion resistance and mechanical properties.

Nickel-based superalloys like Hastelloy are indispensable in today's drive for carbon neutrality and energy efficiency. Their high reliability reduces maintenance and enhances sustainability in harsh operating environments. Dong-A Special Metals contributes to this by providing recycled, high-quality alloy materials ready for industrial use.



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Ltd. is selling titanium (titanium) sponge substitutes for research and alloying on its smart store in order to localize the material in Korea. We look forward to your interest and support. Thank you.


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