What are the most commonly used Hastelloy grades and their applicable scenarios?

Hastelloy C276 is the most universal grade, widely used for flue gas desulfurization equipment, chemical reactors and chlorine treatment pipelines. C22 balances oxidizing and reducing corrosion for mixed acid working conditions. B3 excels in concentrated hydrochloric acid without oxidants. Hastelloy X features outstanding high-temperature oxidation resistance for aerospace heat components and industrial furnace parts. Each grade is customized to match specific corrosive media and temperature ranges to extend equipment service life.