Inconel X750

Inconel X750 is a precipitation hardenable Nickel-Chromium alloy with high strength at temperatures up to 1,300°F (704°C) and oxidation resistance up to 1,800°F (982°C). Inconel X750 offers excellent resistance to relaxation.    

Technical Specification Inconel X750
Nominal Composition

Ni: 70.0 min
Cr: 14.0 - 17.0


0.299 lb./in3, (8.28 g/cm3)

Modulus of Elasticity (E)

At 70°F (20°C): 31.0 x 106 psi
At 1000°F(538°C): 26.7 x 10psi 

Modulus of Rigidity (G)

At 70°F(20°C): 12.0x106 psi

Coefficient of Expansion

7.8 µin/in.-°F (70°F to 1000°F)
14.5 µm/m-°C (20°C to 538°C)

Electrical Resistivity

20.1 µΩ.in, (122 µΩ.cm)

Thermal Conductivity

83 Btu-in/ft2hr-°F, (12.0 W/m-K)

Min Size

0.004 in (0.100 mm)

Max Temp

704oC (1300oF)


It is used for springs operating at elevated temperatures