Hastelloy Alloy C-276, also known as UNS N10276, is A nickel-molybdenum-chromium alloy with an addition of tungsten having excellent corrosion resistance in a wide range of severe environments. The high molybdenum content makes the alloy especially resistant to pitting and crevice corrosion. The low carbon content minimizes carbide precipitation during welding to maintain corrosion resistance in as-welded structures.
Applications of Hastelloy C-276:
Nickel alloy Hastelloy C-276 is one of the most corrosion-resistant materials in modern metallurgy. It primarily resists wet chlorine, various oxidative chlorides, chloride solutions, sulfuric acid, and oxidative salts. It exhibits excellent corrosion resistance in both low-temperature and medium-temperature hydrochloric acid. Therefore, it has a wide range of applications in demanding corrosive environments, such as the chemical industry, petrochemical industry, flue gas desulfurization, pulp and paper, environmental protection, and other industrial sectors. Nickel alloy C-276 can be used in a variety of applications including pressure vessels, reactors, mixers and agitators, scrubbers, dampers, heat exchangers, ventures, and evaporators. It is frequently used in many industries, including chemical and petrochemical processing, oil and gas, power generation, pharmaceutical, pulp and paper production, and wastewater treatment.
Normal product forms: Pipe, tube, sheet, strip, plate, round bar, flat bar, forging, hexagon, and wire.
Specifications/Standard: ASTM B 366, B 462, B 564, B 574, B 575, B 619, B 622, B 626, B 751, B 775, B 829, ASME SB-366, SB-564, SB-574, SB-575, SB-619, SB-622, SB-626, SB-751, SB-775, SB-829
Nickel (Ni): 51 – 63.5%
Molybdenum (Mo): 15 – 17%
Chromium (Cr): 14.5 – 16.5%
Iron (Fe): 4 – 7%
Tungsten (W): 3 – 4%
Cobalt (Co): 2.5% max
Manganese (Mn): 1% max
Carbon (C): 0.01% max
Vanadium (V): 0.35% max
Phosphorus (P): 0.04% max
Sulfur (S): 0.03% max
Silicon (Si): 0.08% max
Physical Constants and Thermal Properties
Density: 8.89 g/cm³
Melting Point: 1370-1400°C
Coefficient of Thermal Expansion: 12.5 µm/m°C
Specific Heat Capacity: 427 J/kg°C
Mechanical Property:
Tensile Strength: 780 MPa
Yield Strength: 355 MPa
Hardness: Approximately 220 Brinell
