Inconel® alloy X750 UNS N07750 W.Nr 2.4669 Strip

Applications
Springs operating from cryogenic temperatures up to 1300°F (704°C), fasteners and components requiring resistance to high temperature and corrosive environments.

Description
Inconel® X750 is a precipitation hardenable Nickel-Chromium alloy with high strength at temperatures up to 1300°F (704°C) and oxidation resistance up to 1800°F (982°C). Inconel® X750 offers excellent resistance to relaxation and as a result it is widely used for springs operating at elevated temperatures.

Industries Supplied
Oil & Gas Extraction and Processing, Nuclear, Aerospace, Power Generation and Automotive

Nominal Composition
C: 0.08 max

Mn: 0.35 max

Si: 0.35 max

S: 0.010 max

Cr: 14.0 - 17.0

Nb: 0.70 - 1.20

Ti: 2.25 - 2.75

Al: 0.40 - 1.00

Fe: 5.00 - 9.00

Co: 1.0 max

Ta: 0.05 max

Cu: 0.50 max

Ni + Co: 70.0 min

Physical Properties
Density: 0.299 lb/in3, (8.28 g/cm3)

Modulus of Elasticity (E):

At 70°F (20°C): 31.0 x 103 ksi (214 GPa)

Modulus of Rigidity (G)

At 70°F (20°C): 12.0 x 103 ksi (82.7 GPa)

Coefficient of Expansion:

7.8 µin/in.-°F (70°F to 600°F)

14.5 µm/m-°C (20°C to 538°C)

Electrical Resistivity: 48.0 µΩ.in, (122 µΩ.cm)

Thermal Conductivity: 83 Btu-in/ft2hr-°F, (12.0 W/m-K)

Applicable Specifications
Strip and Foil: AMS 5542, AMS 5598

Typical Mechanical Properties
AnnealedTensile Strength: 130 ksi max (896 MPa) max
Spring Temper
Tensile Strength: 160 - 220 ksi (1100 - 1517 MPa)
After Precipitation Heat Treat
Heat Treatment: per AMS 5542 / AMS 5598
Tensile Strength: 160 ksi (1100 MPa)