Wuxi Nickel Alloy New Material Technology Co., Ltd
Wuxi Nickel Alloy New Material Technology Co., Ltd
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Incoloy 909 Rod (UNS N19909): Precision Alloy for High-Performance Applications
Incoloy 909 (UNS N19909) is a nickel-iron-cobalt alloy that is celebrated for its remarkable blend of exceptional high strength, a low and stable coefficient of thermal expansion, and outstanding resistance to thermal fatigue. These superior properties render it the optimal choice for precision-engineered components employed in aerospace, power generation, and diverse high-temperature industrial applications.
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | 35.0–40.0 |
| Cobalt (Co) | 12.0–16.0 |
| Niobium (Nb) | 4.3–5.2 |
| Titanium (Ti) | 1.3–1.8 |
| Iron (Fe) | Balance |
| Silicon (Si) | 0.25–0.50 |
| Aluminum (Al) | ≤0.15 |
| Carbon (C) | ≤0.06 |
| Property | Value at Room Temperature | Value at 650°C (1200°F) |
|---|---|---|
| Yield Strength (0.2% offset) | 1034 MPa (150 ksi) | 862 MPa (125 ksi) |
| Tensile Strength | 1276 MPa (185 ksi) | 1034 MPa (150 ksi) |
| Elongation | 15% | 25% |
| Density | 8.19 g/cm³ | — |
| Melting Range | 1395–1430°C (2540–2610°F) | — |
| Curie Temperature | 400–455°C (750–850°F) | — |
| Young’s Modulus | 159 GPa (23.0 × 10³ ksi) | — |
| Shear Modulus | 59 GPa (8.6 × 10³ ksi) | — |
Incoloy 909 is available in various forms, including bars, forgings, rings, sheets, and strips, and is compliant with the following standards:
AMS 5884 – Bars, Forgings, Rings
AMS 5892 – Sheet, Strip
AMS 5893 – Bars, Forgings, Rings
Fabrication processes such as hot forming, welding, machining, and heat treatment are well-suited for Incoloy 909, enabling the production of complex components with tight tolerances.
Incoloy 909 is widely used in industries requiring materials that can withstand extreme temperatures and mechanical stresses:
Gas turbine vanes and casings
Rocket-engine thrust chambers
Ordnance hardware
Springs and steam-turbine bolts
Gauge blocks and instrumentation
Glass-sealing applications
Its low thermal expansion and high strength make it particularly valuable in aerospace and power generation sectors.
Q: What is the maximum operating temperature for Incoloy 909?
A: Incoloy 909 maintains its mechanical properties up to approximately 1150°C (2100°F), making it suitable for high-temperature applications.
Q: Can Incoloy 909 be welded?
A: Yes, Incoloy 909 can be welded using standard gas-tungsten arc welding processes, with proper surface preparation.
Q: Is Incoloy 909 resistant to oxidation?
A: While Incoloy 909 offers good oxidation resistance at elevated temperatures, it may require a protective coating in certain applications due to the absence of chromium in its composition.