| Hastelloy C-276 is a Nickel-Molybdenum-Chromium alloy with the addition of Tungsten, has excellent corrosion resistance in a wide range of corrosive media and is especially resistant to pitting and crevice corrosion. Chemical Composition of Hastelloy C-276 The compositional range for Hastelloy C-276 is provided in the table below. | | | Ni | 55 % | | Mo | 15 - 17 % | | Cr | 14.5 - 16.5 % | | Fe | 4 - 7 % | | W | 3 - 4.5 % | Typical Properties of Hastelloy C-276 Typical properties of Hastelloy C-276 are covered in the following table. | | | Density | 8.89 g/cm3 | 0.321 lb/in3 | | Melting Point | 1370 °C | 2500 °F | | Co-Efficient of Expansion | 11.2 μm/m.°C (20-100 °C) | 6.2x10-6 in/in.°F (70-212 °F) | | Modulus of Rigidity | 78.6 kN/mm2 | 11400 ksi | | Modulus of Elasticity | 205.5 kN/mm2 | 29806 ksi | Properties of Supplied Materials and Heat Treated Materials | | | Annealed/Spring Temper | Stress relieve at 400 - 450°C (750 - 840°F) for 2 hours and air cool. | | | | Annealed | 850 - 1050 N/mm2 | 123 - 152 ksi | -200 to +400°C | -330 to +750°F | | Spring Temper | 1300 - 1600 N/mm2 | 189 - 232 ksi | -200 to +400°C | -330 to +750°F | Relevant Standards Hastelloy C-276 is covered by the following standards: • ASTM B619 • ASTM B574 Equivalent Materials Hastelloy C-276 is the tradename of Special Metals Group of Companies and equivalent to: • W.NR 2.4819 • UNS N10276 • AWS 054 Applications of Hastelloy C-276 Hastelloy C-276 typically finds application in: • Pollution control, • Chemical processing, • Waste treatment, • Marine engineering, • Pulp and paper production. |