Inconel X-750

Inconel® X-750 (UNS N07750/W. Nr. 2.4669) is a precipitation hardenable nickel-chromium alloy used for its corrosion and oxidation resistance and high strength at temperatures up to 1300°F. Although much of the effect of precipitation hardening is lost with increasing temperature over 1300°F, Inco X-750 is highly resistant to chemical corrosion and oxidation and has high stress-rupture strength and low creep rates under high stresses at temperatures up to 1500°F (816°C) after suitable heat treatment. 

Inco X-750 also has excellent properties down to cryogenic temperatures and exhibits excellent resistance to chloride ion stress-corrosion cracking. It also demonstrates satisfactory resistance to numerous oxidizing environments, with similar corrosion resistance to Inconel® 600 under many types of media. Due to Inco X-750’s “relaxation” resistance and it’s ability to maintain its toughness over time, it is considered a primary choice for specialized spring applications.

The recommended filler metal for welding is Inconel® 718.

Chemical Composition

Element%
Carbon, C.08 max
Manganese, Mn1.00 max
Sulfur, S.01 max
Silicon, Si.50 max
Chromium, Cr14.0 -17.0
Nickel, Ni70.0 min
Copper, Cu0.50 max
Cobalt, Co1.0 max
Titanium, Ti2.25-2.75 max
Aluminum, Al0.40- 1.0
Iron, Fe5.0- 9.0
Niobium, Nb0.70- 1.20
Physical Properties

PropertiesMetricImperial
Density8.28 g/cm30.299 lbs/in3
Melting Range1393-1427 °C2540-2600 °F
Mechanical Properties

PropertiesMetricImperial
Tensile Strength, Ultimate1250 MPa181000 psi

Tensile Strength, Yield

850 MPa123000psi

Elongation at Break

30%30%
Modulus of Elasticity145 GPa21000 ksi
Specifications

FormStandard
RodASTM B 637, ASME SB 637, ISO 9723, ISO9724, ISO9725, AMS 5667, AMS 5668, AMS 5669, AMS 5670, AMS 5671, AMS 5747, EN10269
BarASTM B 637, ASME SB 637, ISO 9723, ISO9724, ISO9725, AMS 5667, AMS 5668, AMS 5669, AMS 5670, AMS 5671, AMS 5747, EN10269
Forging StockASTM B 637, ASME SB 637, ISO 9723, ISO9724, ISO9725, AMS 5667, AMS 5668, AMS 5669, AMS 5670, AMS 5671, AMS 5747, EN10269
PlateISO 6208, AMS 5542 and AMS 5598
SheetISO 6208, AMS 5542 and AMS 5598
StripISO 6208, AMS 5542 and AMS 5598
WireBS HR 505, AMS 5698, AMS 5699
OtherUNS N07750, W.Nr 2.4669, Inconel X750 (tradename), UNS N07752
Available Forms
  • Bar
  • Wire
  • Sheet
  • Plate
  • Flanges
  • Forgings
  • Weld Rod
  • Pipe fittings
  • Seamless & Welded pipe
  • Seamless Tube & Welded tube
    • Applications
  • Nuclear reactors
  • Gas turbines
  • Rocket engines
  • Pressure vessels
  • Aircraft structures
  • Thrust chambers
  • Forming Tools
  • Extrusion Dies
  • Springs and Fasteners
  • Ducting systems

    • For inquiries on this product:

    INCONEL® IS A TRADEMARK OF SPECIAL METALS.
    THE INFORMATION ABOVE IS NOT WARRANTED, GUARANTEED, OR FOR DESIGN PURPOSES