C276 (Hastelloy C276) C276 is a high-performance nickel-molybdenum-chromium-based corrosion-resistant alloy.
Its material properties and applications are as follows: Material Composition: Main Components:
Nickel (Ni): Approx. 57% (balance)
Molybdenum (Mo): 15%~17%
Chromium (Cr): 14.5%~16.5%
Trace Elements:
Iron (Fe): 4%~7%
Tungsten (W): 3%~4.5%
Cobalt (Co): ≤2.5%
Carbon (C): ≤0.01%
Silicon (Si): ≤0.08%
Manganese (Mn): ≤1%
Phosphorus (P): ≤0.025%
Sulfur (S): ≤0.01%
Core Properties: Excellent Corrosion Resistance:
Resistant to Chloride Ion Corrosion: High molybdenum and chromium content makes it one of the few materials capable of withstanding corrosion from moist chlorine gas, hypochlorites, and chlorine dioxide solutions.
Resistant to Chloride Salt Solutions: Exhibits significant resistance to high-concentration solutions of ferric chloride and copper chloride. Resistance to Oxidizing/Reducing Media:** Exhibits excellent performance in both oxidizing and reducing conditions, resisting pitting corrosion, crevice corrosion, and stress corrosion cracking.
Resistance to High-Temperature Acid Corrosion:** Suitable for high-temperature environments containing impurities in inorganic acids (such as sulfuric acid and hydrochloric acid) and organic acids (such as formic acid and acetic acid).
High-Temperature Stability:
Melting point approximately 1371℃; maintains excellent corrosion resistance and mechanical strength even at high temperatures.
Resistance to Grain Boundary Precipitation:
Does not readily form grain boundary precipitates in the weld heat-affected zone, suitable for most chemical process applications.
Physical Properties:
Density: 8.9 g/cm³
Elastic Modulus: 205 GPa (21℃)
Tensile Strength: ≥601.2 MPa
Yield Strength: ≥204.8 MPa
Elongation at Break: ≥56%
Applications: Chemical and Petrochemical:
Components and catalytic systems in contact with chloride-containing organic compounds.
Reactors for acetic acid and acidic products; sulfuric acid condensers.
Organic chlorination process equipment, such as digesters and bleaching vessels.
Flue Gas Desulfurization (FGD):
Scrubbers, reheaters, wet steam fans, etc.
Oil & Gas:
Components in contact with acidic gases, such as pipe and stack linings.
Pulp & Paper:
Cooking and bleaching vessels, resistant to high concentrations of chloride ions and acidic media.
Environmental Protection:
Equipment and components in corrosive seawater environments, such as ship and offshore platform parts.
Aerospace:
Manufacturing aerospace components, engine parts, etc., utilizing their high-temperature stability and corrosion resistance.
Processing & Welding:
Welding performance: Requires controlled low heat input, interpass temperature not exceeding 120°C, and narrow weld bead technology to avoid grain boundary precipitation in the heat-affected zone.
Processing Difficulty: Due to complex composition, processing is difficult and requires specialized equipment and technical support.
The above is a detailed introduction to C276 alloy, which is mainly used for casting production in high-end industries. Of course, if you need to customize large quantities of C276 alloy castings, you can choose to cooperate with Mulan Manufacturing Group. Mulan Manufacturing Group has 13 years of experience in metal casting production and processing, and exports to countries such as Europe, America, Japan and South Korea. We look forward to your consultation and cooperation.
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