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Incoloy 907 is a nickel iron cobalt alloy with high strength and low thermal expansion coefficient, which is strengthened by aging hardening heat treatment. The combination of low expansion and high strength makes Incoloy 907 alloy used for gas turbine components. Low expansion makes it easier to control clearance and tolerance, so as to improve fuel efficiency. High strength makes higher strength-density ratio can reduce the weight of aircraft engine. Therefore, Incoloy 907 is used for sealing, shaft, shell and other structural components of gas turbine. The properties of the alloy are also attractive in other applications, including instruments, glass-metal seals, ceramic molds and power generation.
Incoloy 907 alloy chemical composition%:
C |
Cr |
Ni |
Co |
Al |
Ti |
Fe |
≤0.06 |
≤1.0 |
35.0-40.0 |
12.0-16.0 |
≤0.2 |
1.3-1.8 |
Balance |
Nb |
B |
Si |
Mn |
S |
P |
Cu |
4.3-5.2 |
≤0.012 |
0.07-0.35 |
≤1.0 |
≤0.015 |
≤0.015 |
≤0.5 |
Incoloy 907 Physical properties :
Density 8.28 g/cm3
Melting point :1332-1400 ℃