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Nickel Incoloy 909

Nickel Incoloy 909

Inconel 909*/Incoloy 909* is a nickel-cobalt-iron alloy. It has high stability, good strength, constant thermal expansion coefficient, and constant elastic modulus. The combination of low expansion and high strength makes Inconel 909*/Incoloy 909* especially useful for gas turbines. The low expansion enables closer control of clearances and tolerances for greater power output and fuel efficiency. The high strength increases strength-to-weight ratios for lower weight in aircraft engines. For those reasons, Inconel 909*/Incoloy 909* is used for gas-turbine vanes, casings, shafts, and shrouds. The properties of Inconel 909*/Incoloy 909* are attractive also for rocket-engine thrust chambers, ordnance hardware, springs, steam-turbine bolts, gauge blocks, instrumentation, and glass-sealing applications.

The composition of Inconel 909*/Incoloy 909* is designed to provide a low and constant coefficient of thermal expansion. The alloy’s expansion rate is about half the rate of other alloys having comparable strength.

Chemical Properties

Element min max
Carbon - 0.06
Manganese - 1
Silicon 0.25 0.5
Phosphorus - 0.015
Sulfur - 0.015
Nickel 35 40
Cobalt 12 16
Columbium 1.3 5.2
Titanium - 1.8
Chromium - 1
Tantalum - 0.05
Aluminum - 0.15
Boron - 0.012
Copper - 0.5
Iron remainder

Tensile Properties (At Room Temp)

Property Value
Tensile Strength 175 ksi
Yield Strength at 0.2% Offset 140 ksi
Elongation in 4D 8%
Reduction of Area 12%

Select AMS Number:

AMS Number Alloy Type UNS Cross Ref. Spec Misc./Shape
AMS 5884 Incoloy 909 Nickel N19909 - Bar
AMS 5884 Incoloy 909 Nickel N19909 - Forging
AMS 5884 Incoloy 909 Nickel N19909 - Ring
AMS 5892 Incoloy 909 Nickel N19909 - Sheet
AMS 5892 Incoloy 909 Nickel N19909 - Strip
AMS 5893 Incoloy 909 Nickel N19909 - Bar
AMS 5893 Incoloy 909 Nickel N19909 - Forging
AMS 5893 Incoloy 909 Nickel N19909 - Ring

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