Incoloy A286

Incoloy A286 丨 UNS S66286

Incoloy A286 is a precipitation hardenable alloy known for its exceptional combination of high strength and corrosion resistance. It retains its mechanical properties at elevated temperatures up to approximately 700°C (1300°F) due to its precipitation hardening capability. This alloy exhibits excellent creep and oxidation resistance, making it suitable for use in harsh environments where high strength and corrosion resistance are required.

Incoloy A286 / Nickel Alloy A286 / UNS S66286 / SUH60 / W.Nr 1.4980

Applications of incoloy A286:

  • Aerospace: Jet engines, turbine blades, exhaust systems, aircraft fasteners, and other critical components requiring high strength and corrosion resistance in aerospace applications.

  • Automotive: Engine components, exhaust systems, turbocharger turbines, and other high-stress automotive parts.

  • Industrial: Gas turbines, power generation equipment, chemical processing plants, and other industrial applications where elevated temperature strength and corrosion resistance are crucial.

  • Marine: Marine engine components, seawater desalination equipment, and offshore drilling components requiring corrosion resistance in marine environments.

Normal product forms: Sheets, plates, strips, bars, hexagon, forgings, wires, and welding wires.

Specifications/Standard: AMS 5731, AMS 5732, AMS 5734, AMS 5737, AMS 5853, ASTM A453, ASTM A638, and EN 1.4980.

Chemical Composition:

  • Nickel (Ni): 24-27%

  • Chromium (Cr): 13.5-16%

  • Iron (Fe): Balance

  • Manganese (Mn): Max 2.0%

  • Silicon (Si): Max 1.0%

  • Titanium (Ti): 1.9-2.35%

  • Aluminum (Al): 0.1-0.65%

  • Carbon (C): Max 0.08%

  • Molybdenum (Mo): Approximately 1.0%

  • Phosphorus (P): Max 0.025%

  • Sulfur (S): Max 0.025%

Physical Constants and Thermal Properties：

  • Density: 0.287 lb/in³ or 7.94 g/cm³.

  • Melting Point: 1430 °C or 2600 °F.

  • Coefficient of Expansion: 16.4 μm/m °C (20 – 100 °C) or 9.1 x 10 -6 in/in °F (70 – 212 °F).

  • Modulus of Rigidity: 71.5 kN/mm² or 10370 ksi.

  • Modulus of Elasticity: 205 kN/mm² or 29733 ksi.

  • Typical heat treatment: Condition as supplied by AWI Type Temperature Time Cooling Annealed or Spring Temper Age Harden 705 – 760 ° C (1300 – 1400 ° F) 16 Hr Air.

  • Typical mechanical properties: Annealed Approx. tensile strength <750 N/mm² <109 ksi Approx. operating temperature depending on load and environment -200 to +400 ° C -330 to +750 ° F.

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