About Alloy
Alloy 907 (Incoloy alloy 907, UNS N19907) is a nickel-iron-cobalt alloy with additions of niobium and titanium for precipitation hardening. It has the low coefficient of expansion and high strength of alloy 903 but alloy 907 has improved notch-rupture properties at elevated temperatures. Alloy 907 is used for gas turbines components (seals, shafts, casings and other structural parts).
Product Form
Round bar/Forgings
Chemical Composition
| Elements | Content (%) |
| Iron, Fe | 42 |
| Nickel, Ni | 38 |
| Cobalt, Co | 13 |
| Niobium, Nb | 4.7 |
| Titanium, Ti | 1.5 |
| Silicon, Si | 0.15 |
| Aluminum, Al | 0.03 |
Property
| Properties | Metric | Imperial |
| Tensile strength (precipitation hardened, value at room temperature) | 1350 MPa | 196000 psi |
| Yield strength (@ strain 0.200%, precipitation hardened, value at room temperature) | 1100 MPa | 160000 psi |
| Poisson’s ratio | 0.36 | 0.36 |
| Elongation at break (precipitation hardened) | 10% | 10% |
| Reduction of area | 36 | 36 |
Application
Gas turbine seals
Casings
Glass to metal sealing
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