Incoloy alloy 925 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 sulphides and chlorides. Used for surface and down-hole hardware in sour gas wells and for oil-production equipment.

Available product forms for the Incoloy alloy 925
Cold Drawn Seamless Pipe / Tube, Extruded Seamless Pipe / Tube, Round Bar, Flat Bar, Billet Straight Forging, Ingot and Wire

Limiting Chemical Composition,%
Nickel 42.0-46.0; Chromium 19.5-22.5; Iron 22 min; Molybdenum 2.5-3.5; Copper 1.5-3.0; Titanium 1.9-2.4; Aluminum 0.1-0.5; Manganese 1.0 max.; Silicon 0.5 max.; Niobium 0.5 max.; Carbon 0.03 max.; Sulfur 0.03 max

Physical Constants
Density, lb/in3 0.292; g/cm3 8.08; Melting Range, 2392-2490 F; 1311-1366 C



Nominal Mechanical Properties
Typical mechanical properties at room temperature of solution-annealed bar: Tensile Strength: 99.3KSI/685MPA, Yield Strength (0.2% offset): 39.3KSI/ 271MPA, Elongation %:56. The compression test result, at room temperature, for a solution-annealed and aged bar was 122.7 ksi (846 MPa) and the yield strength tension test result was 123.5 ksi (851 MPa).