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Nickel Alloy 909 /Incoloy 909® (UNS N19909)

Technical Data Sheet


Chemical Composition Limits
Weight% N Co Nb Ti Fe Si Al C
Alloy 909 35.0 - 40.0 12.0 - 16.0 4.3 - 5.2 1.3 - 1.8 Bal 0.25 - 0.50 0.15 max 0.06 max

Alloy 909/ Incoloy 909® (UNS N19909) is a nickel-iron-cobalt alloy. Alloy 909 is a high strength alloy with impressive constant low coefficient of thermal expansion. Due to Alloy 909 characterisitics it has wide applications where low expansion together with high strength is required. Uses of Alloy 909 include gas turbines, rocket-engine thrust chambers, ordnance hardware, springs, steam-turbine bolts, gauge blocks, instrumentation, glass-sealing applications etc.

Typical Mechanical Properties

Material Temperature Yield Strength (0.2% Offset) Tensile Strength Elongation (%) Reduction Area %
Ksi MPa Ksi MPa
Alloy 909 70F 20C 150 1034 185 1276 15 30
Alloy 909 1200 650 125 862 150 1034 25 60
Typical Tensile Properties of Age-Hardened Alloy 909

Alloy 909/ Incoloy 909® (UNS N19909) is available in Round Bar, Flat Bar, Sheet, Strip, Forgings, Billet. For all stock availability contact Sales

UNS N19909
AMS 5884 Bars, Forgings, Rings
AMS 5892 Sheet, Strip
AMS 5893 Bars, Forgings, Rings
Incoloy 909 (trademark)


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Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.