Incoloy 907
Description：
Alloy 907 (Incoloy alloy 907) 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).
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 |
Applications:
l Gas turbine seals
l Casings
l Glass to metal sealing
Mechanical Properties:
|
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 |
Machinability:
Incoloy 907 can be machined using conventional machining methods which are used for iron-based alloys. Machining operations are performed using commercial coolants. High-speed operations such as grinding, milling or turning, are performed using water-base coolants.
Specifications:
l UNS N19907
l Incoloy Alloy 907