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.
| 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 |
| 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 | ||||||||
Availability
Alloy 909/ Incoloy 909® (UNS N19909) is available in Round Bar, Flat Bar, Sheet, Strip, Forgings, Billet. For all stock availability contact Sales
Specifications
UNS N19909
AMS 5884 Bars, Forgings, Rings
AMS 5892 Sheet, Strip
AMS 5893 Bars, Forgings, Rings
Incoloy 909 (trademark)
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Copyright © 2025 jiangsu super alloy technology Co., Ltd.
