Inconel® alloy X750

UNS N07750
W.Nr 2.4669

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

  • Annealed
    • Tensile 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) Min
  • Suggested Operating Conditions: Dependant on heat treat. See SMC publication for details.

  • INCONEL® is a registered trademark of the Special Metals Corporation group of companies.

    For further information Contact:

    Email: stripinfo@elgiloy.com
    Phone: 1 888 843 2350 
    Elgiloy Specialty Metals - Strip Products
    1565 Fleetwood Dr.
    Elgin, IL 60123 USA