Hastelloy C-276 alloy is a nickel-chromium-molybdenum alloy containing tungsten. Because of its extremely low silicon carbon content, it is considered to be a versatile corrosion-resistant alloy. Mainly resistant to wet chlorine, various oxidizing chlorides, chloride salt solutions, sulfuric acid and oxidizing salts, it has good corrosion resistance in low and medium temperature hydrochloric acid. Therefore, in the past thirty years, in the harsh corrosive environment, such as chemical industry, petrochemical industry, flue gas desulfurization, pulp and paper, environmental protection and other industrial fields have been widely used.

    The alloy has the following characteristics:
①In the two atmospheres of oxidation and reduction, it has excellent corrosion resistance to most corrosive media.
②Excellent resistance to pitting corrosion, crevice corrosion and stress corrosion. The higher Mo and Cr contents make the alloy resistant to chloride ion corrosion, and the W element further improves the corrosion resistance. At the same time, Hastelloy C-276 alloy is one of the only materials that are resistant to the corrosion of damp chlorine gas, hypochlorite and chlorine dioxide solutions. It has a high concentration of chloride salt solutions such as ferric chloride and copper chloride. Significant corrosion resistance. Suitable for sulfuric acid solutions of various concentrations, it is one of the few materials that can be applied to hot concentrated sulfuric acid solutions.

    Tensile strength: σb≥730Mpa, elongation: δ≥40%, hardness: HRB≤100.
The hot forming of Hastelloy C-276 alloy is annealed immediately at 1150°C and quenched with water. The cold deformation of Hastelloy C-276 alloy will increase its strength.
Hastelloy C-276 alloy and ordinary austenitic stainless steel have similar forming properties. However, due to its greater strength than ordinary austenitic stainless steel, there will be greater stress during the cold forming process. In addition, the work hardening speed of this material is much faster than ordinary stainless steel, so in the process of extensive cold forming, it is necessary to adopt halfway annealing treatment.

    The physical properties of Hastelloy C-276 alloy are as follows:
Material composition: 57Ni-16Cr-16Mo-5Fe-4W-2.5Co*-1Mn*-0.35V*-0.08Si*-0.01C* * is the maximum a margin
Executive standard: UNS N10276, ASTM B575, ASME SB575, DIN/EN 2.4819
Density: 8.90g/cm3