Alloy X 750 INCONEL® X 750

Alloy X 750 INCONEL® X 750 is a precipitation-hardenable nickel -chromium alloy renowned for its excellent resistance to corrosion , oxidation , and high temperatures up to 1300°F (704°C). It is also used at temperatures up to 1800°F (982°C) for short-term applications. The alloy maintains excellent mechanical properties even at cryogenic temperatures.

This alloy is ideal for applications requiring high tensile strength, fatigue resistance, and creep-rupture strength, such as in gas turbines, nuclear reactors, high-temperature springs, and aerospace components.

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Reference standards:

• ASTM B637 (bars and forgings)
• AMS 5667, 5670, 5671, 5747 (specifications for various heat treatments)
• NACE MR0175 (Oil & Gas)

Chemical composition (%)

Mechanical properties

Heat treatments

• For high temperature service (above 1100°F):

  • 2100°F (1149°C) for 2-4 hours, air cool.
  • 1550°F (843°C) for 24 hours, air cooling.
  • 1300°F (704°C) for 20 hours, air cooling.

• For service at temperatures below 1100°F:

  • 1800°F (982°C) for 1 hour.
  • 1350°F (732°C) for 8 hours, controlled cooling to 1150°F (621°C), holding for 18 hours.

• For high temperature springs:

  • 1350°F (732°C) for 16 hours, air cooling.

Available formats

INCONEL® Alloy X 750 is available in the following forms:

• Bars

• Threads

• Flange

• Forged

• Sheet metal

• Tubes

Industrial applications

Thanks to its mechanical resistance and corrosion properties, INCONEL® X 750 is used in the following sectors:

• Aerospace and Defense: Turbine components, exhaust ducts, high-temperature springs.
• Power Generation: Nuclear reactor components, heat exchangers.
• Chemical and Pharmaceutical Industry: Corrosion-resistant structures at high temperatures.
• Motorsport: Components for high-performance engines.
• Nuclear: Radiation-resistant containers, pipes and fittings.
• Oil & Gas: Sulfide Corrosion Resistant Valves and Joints.