Incoloy 925 UNS N09925 Nickel Alloy Seamless Tubes
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
Incoloy 925 Chemical Composition,%
| Alloy | % | Ni | Cu | Al | Fe | Ti | Co | Mn | S | C | Si | P | Cr | Mo | Nb |
| Incoloy 925 | Min. | 42.0 | 1.5 | 0.1 | 22.0 | 1.9 | 19.5 | 2.5 | |||||||
| Incoloy 925 | Max. | 46.0 | 3.0 | 0.5 | Balance | 2.4 | 1.0 | 0.03 | 0.03 | 0.50 | 22.5 | 3.5 | 0.5 |
| Density | 0.292 lb/in³, 8.08kg/dm³ |
| Melting point | 2392-2490 °F; 1311-1366 °C |
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).
Incoloy 925 Alloy Minimum Mechanical properties in the room temperature:
| Alloy state | Tensile strengthRm N/mm2 | Yield strengthRP0.2N/mm2 | ElongationA5 % |
| 925 | 650 | 295 | 35 |
ASME SB163 Standard Specification for Seamless Nickel and Nickel Alloy Condenser and Heat-Exchanger Tubes
ASME SB165 Standard Specification for Nickel-Copper Alloy (UNS N04400)* Seamless Pipe and Tube
ASME SB167 Standard Specification for Nickel-Chromium-Iron Alloys, Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS N06617),and Nickel-Iron-Chromium-Tungsten Alloy (UNS N06674) Seamless Pipe and Tube
ASME SB407 Standard Specification for Nickel-Iron-Chromium Alloy Seamless Pipe and Tube
ASME SB423 Standard Specification for Nickel-Iron-Chromium-Molybdenum-Copper Alloy (UNS N08825, N08221, and N06845) Seamless Pipe and Tube
ASME SB444 Standard Specification for Nickel-Chromium-Molybdenum-Columbium Alloys (UNS N06625 and UNS N06852) and Nickel-Chromium-Molybdenum-Silicon Alloy (UNS N06219) Pipe and Tube
ASME SB622 Standard Specification for Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube
ASME SB668 UNS N08028 Seamless Pipe and Tube
ASME SB690 Standard Specification for Iron-Nickel-Chromium-Molybdenum Alloys (UNS N08366 and UNS N08367) Seamless Pipe and Tube
ASME SB729 Standard Specification for seamless UNS N08020, UNS N08026, and UNS N08024 nickel alloy pipe and Tube
