Hastelloy alloy (Hastelloy alloy) is a general name for the commercial brand of nickel-based corrosion resistant alloy produced by Hastelloy International Company in the United States. These include alloys such as Hastelloy B-2 based on nickel molybdenum and Hastelloy C-4 based on nickel chromium molybdenum.

Hastelloy grades include the following:

HASTELLOY B-2 nickel-molybdenum alloy has excellent corrosion resistance in reduced environments.

HASTELLOY B-3 is an upgraded version of HASTELLOY B-2 with excellent corrosion resistance to hydrochloric acid at any temperature and concentration.

HASTELLOY C-4 has good thermal stability, good toughness and corrosion resistance at 650-1040 degrees Celsius.

HASTELLOY C-22 has better resistance to uniform corrosion in oxidizing media than C-4 and C-276, as well as excellent resistance to local corrosion. HASTELLOY C-276 has good resistance to oxidizing and moderately reducing corrosion, and has excellent resistance to stress corrosion. HASTELLOY C-2000 is one of the best corrosion resistant alloys with excellent uniform corrosion resistance in oxidation and reduction environments.

HASTELLOY G-35 G-30 upgrades with better corrosion resistance and thermal stability.

HASTELLOY G-30 is a nickel-based alloy with high chromium content that exhibits excellent properties in strong oxidizing agents such as phosphoric acid mixed with acid media.

HASTELLOY X combines the characteristics of high strength, oxidation resistance and ease of processing. Each of the above grades has a specific chemical composition and mechanical properties, and each has its own advantages. The characteristics of Hastelloy alloy can not be generalized, and should be analyzed according to different grades.