Incoloy 925 is a precipitation-hardenable nickel-iron-chromium alloy with additions of molybdenum and copper. It combines the high strength of a precipitation-hardenable alloy with the excellent corrosion resistance of INCOLOY alloy 825. The alloy has outstanding resistance to general corrosion, pitting, crevice corrosion, and stress-corrosion cracking in many aqueous environments, including those containing sulfides and chlorides.
Applications:
Incoloy 925 is used in numerous applications requiring a combination of high strength and corrosion resistance. It is used for down-hole and surface gas well components including but not limited to: packers, pump shafts in marine environments, safety valves, hangers, landing nipples, and fasteners.
Normal product forms: bars, forgings, tubes, and wires.
Specifications/Standard: NACE MR-0175/ISO 15156
Nickel (Ni): 42.0 – 46.0
Chromium (Cr): 19.5 – 22.5
Iron (Fe): 22 min
Molybdenum (Mo): 2.5 – 3.5
Copper (Cu): 1.5 – 3.0
Titanium (Ti): 1.9 – 2.4
Aluminum (Al): 0.1 – 0.5
Manganese (Mn): 1.0 max
Silicon (Si): 0.5 max
Niobium (Nb): 0.5 max
Carbon (C): 0.03 max
Sulfur (S): 0.03 max
Physical Constants and Thermal Properties
Density: 8.08 g/cm³ (0.292 Ib/in3)
Melting Range: 2392-2490°F (1311 – 1366℃)
Tensile Strength: 140 KSI Min
Elongation: 18% Min
Reduction of Area: 25% Min
Hardness (HRC): 26-38
