Incoloy 945 (UNS N09945)
Incoloy 945 (UNS N09945) is a high-strength, corrosion-resistant alloy designed for demanding applications in the oil and gas industry. The properties of this age hardenable nickel-iron-chromium alloy are enhanced by its contents of molybdenum, copper, niobium, titanium, and aluminum. The alloy’s nickel content results in resistance to chlorideinduced stress corrosion cracking. Nickel, in conjunction with the molybdenum and copper, also gives alloy 945 outstanding resistance to general corrosion in reducing media. Molybdenum also imparts resistance to localized attack (pitting and crevice corrosion). The alloy’s content of chromium provides resistance in oxidizing environments. Niobium, titanium and aluminum participate in the age hardening reaction that occurs during heat treatment. Their interaction forms gamma prime and gamma double prime precipitates, which strengthen the alloy.
|Incoloy 945||–||–||Incoloy 945||N09945||–||–||–||–||–||–|
Chemical Composition, %
Typical Physical and Mechanical Properties (RT, Solution annealed)
|Density, g/cm3||Melting Point, ℃||Tensile Strength, MPa||Yield Strength, MPa||ELongation, %||Hardness, HRB|
Available Products and Specifications
|Rod, Bar, Wire and Forgings||–|
|Plate, Sheet and Strip||–|
|Pipe and Tube||ASTM B983|
High strength and corrosion resistance in aggressive sour wells containing high levels of hydrogen sulfide and chorides
Incoloy 945 is suitable for downhole oil and gas applications requiring high strength and corrosion resistance in aggressive sour wells containing high levels of hydrogen sulfide and chorides. Because of the alloy’s resistance to stress cracking in environments rich in hydrogen sulfide, it is suitable for downhole and surface gas-well components including tubular products, valves, hangers, landing nipples, tool joints and packers. The alloy can also be used for fasteners, pump shafting and high strength piping systems.