Nimonic 901 is a nickel-iron-chromium alloy containing titanium and aluminum for precipitation hardening and molybdenum for solid-solution strengthening. The alloy has high yield strength and creep resistance at temperatures of about 1110°F (600°C). A substantial iron content enables the alloy to combine high strength with good forging characteristics. It exhibits outstanding mechanical properties even in extreme environments, making it suitable for demanding applications requiring strength and corrosion resistance at high temperatures.
Applications of Nimonic 901:
Ninomic 901 finds applications in aerospace, gas turbine engines, industrial furnaces, chemical processing equipment, and high-temperature fasteners. It is used in components such as turbine discs, shafts, blades, and springs where high strength and corrosion resistance are critical.
Normal product forms: sheets, plates, bars, forgings, tubes, and wires.
Specifications/Standard: AMS 5660, AMS 5661, AMS 5662, AMS 5701, and ASTM B463.
Chemical Composition:
Nickel (Ni): 41-43.5%
Chromium (Cr): 11-14%
Iron (Fe): Balance
Titanium (Ti): 2.2-2.75%
Silicon (Si): ≤ 1%
Manganese (Mn): ≤ 0.8%
Copper (Cu): ≤ 0.5%
Aluminum (Al): ≤ 0.35%
Carbon (C): ≤ 0.1%
Phosphorus (P): ≤ 0.04%
Sulfur (S): ≤ 0.04%
Boron (B): 0.01 – 0.02%
Physical Constants and Thermal Properties:
Density: 0.294 lb/in³ or 8.14 g/cm³.
Melting Range: 2336-2453 °F or 1280-1345 °C.
Specific Heat: 0.103 Btu/lb°F or 431 J/kg°C at 20°C.
Electrical Resistivity: 674 ohm/circmilft or 112 μΩcm at 20°C.
Mean Coefficient of Linear Thermal Expansion: 13.5 μm/m °C or 7.50 10-6in/in °F (20-100 °C or 70-200 °F), 19.9 μm/m °C or 11.06 10-6in/in °F (1000 °C or 1832 °F).
