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.
Chemical Composition
Mechanical & Physical Properties
Fabrication & Standards
Incoloy 909 is available in various forms, including bars, forgings, rings, sheets, and strips, and is compliant with the following standards:
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AMS 5884 – Bars, Forgings, Rings
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AMS 5892 – Sheet, Strip
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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.
Applications
Incoloy 909 is widely used in industries requiring materials that can withstand extreme temperatures and mechanical stresses:
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Gas turbine vanes and casings
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Rocket-engine thrust chambers
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Ordnance hardware
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Springs and steam-turbine bolts
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Gauge blocks and instrumentation
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Glass-sealing applications
Its low thermal expansion and high strength make it particularly valuable in aerospace and power generation sectors.
Frequently Asked Questions
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.
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UNS N19909 Incoloy 909 Rod Superior Thermal Expansion Control Images
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