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Alloy X-750

A nickel-chromium precipitation-hardenable grade, Alloy X-750 has high tensile and creep-rupture properties.

Similar to Alloy 600, Alloy X-750 has additional aluminium and titanium to increase the mechanical properties at temperatures up to 704°C.


Product form Size range from Size range to
Alloy X-750 round bar 4.76 mm 203.2 mm
Alloy X-750 sheet & plate 0.127 mm 63.5 mm

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    Sheet & Plate

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    Round Bar

Chemical Analysis

% Ni Cr C Mn Cu Si S Fe Nb+Ta
Min 70 14 - - - - - 5 0.7
Max - 17 0.08 1 0.50 0.50 0.01 9 1.2


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Perfect for applications in the Power Generation industry

Alloy X-750 can be used in a variety of applications including:

  • Rocket engines
  • Gas turbine engines
  • Nuclear reactors
  • Nuclear valves
  • Pressure vessels
  • Tooling
  • Aircraft structure

About Alloy X-750

Alloy X-750 has good mechanical properties at high temperatures up to 704°C. The alloy was developed from Alloy 600 by adding aluminium and titanium to make the alloy precipitation hardenable. Alloy X-750 also demonstrates good formability and excellent high-temperature oxidation resistance.

Alloy X-750 offers outstanding performance in highly stressed environments, which is why it’s often used in gas turbines, nuclear reactors and aircraft structures.


For more information on Alloy X-750, including details of our inventory contact us, or fill in our online quote form and we’ll get right back to you!


8.276 g/cm³
Melting range:
Poisson's ratio:
Electrical resistivity:
1.22 x 10-6 Ω⋅m
Corrosion resistance:
15.05-18.8 , PREN = %Cr + 1.5(%Mo + %W + %Nb)


UNS Number:
Werkstoff Number:
ASTM B637, AMS 5542, 5598, 5670, 5671, 5247
Download the Alloy X-750 Data Sheet Download

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