The chemical composition of Hastelloy B2 bar mainly includes nickel, chromium, molybdenum and a small amount of iron, tungsten and other elements. The combination of these elements gives the material remarkable corrosion resistance and high-temperature strength. The nickel element leads to good corrosion resistance, the chromium element enhances the material's corrosion resistance in an oxidizing environment, and the molybdenum element improves the material's corrosion resistance in a reducing environment. The addition of elements such as iron and tungsten further enhances the strength and hardness of the material. Hastelloy B2 bar has good processing properties and can be used for hot processing and cold processing.