About Alloy
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.
Product Form
Rod, Bar, Wire and Forgings: --
Plate, Sheet and Strip: --
Pipe and Tube: ASTM B983
Chemical Composition
| Alloy | C | Si | Mn | P | S | Cr | Ni | Mo | Nb | Al | Ti | Cu | Fe |
| Incoloy 945 | 0.005-0.04 | ≤0.50 | ≤1.0 | ≤0.03 | ≤0.03 | 19.5-23.0 | 45.0-55.0 | 3.0-4.0 | 2.5-4.5 | 0.01-0.70 | 0.50-2.50 | 1.5-3.0 | Bal |
Property
| Density, g/cm3 | Melting Point, ℃ | Tensile Strength, MPa | Yield Strength, MPa | ELongation, % | Hardness, HRB |
| 8.2 | 1270-1317 | 1194 | 920 | 27 | / |
Application
Downhole oil and gas applications: It is suitable for components used in aggressive sour wells containing high levels of hydrogen sulfide and chlorides. This includes tubular products, valves, hangers, landing nipples, tool joints, and packers.
Fasteners: Incoloy 945 can be used for high-strength fasteners.
High strength piping systems: The alloy is suitable for piping systems that require both strength and corrosion resistance.
Pump shafting: Incoloy 945 can be used for pump shafts in demanding environments.
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