X-750 Nickel Alloy UNS N07750 EN 2.4669

Alloy X-750 Nickel Base Alloy Inconel X-750 / UNS N07750 / EN 2.4669 Sheet and Plate

Products Specification

INCONEL alloy 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 to 1300°F. Although much of the effect of precipitation hardening is lost with increasing temperature over 1300°F, heat-treated material has useful strength up to 1800°F. Alloy X-750 also has excellent properties down to cryogenic termperatures. Composition is shown in Table 1. The economics of INCONEL alloy X-750 coupled with its availability in all standard mill forms has resulted in applications in a wide variety of industrial fields. In gas turbines, it is used for rotor blades and wheels, bolts, and other structural members. INCONEL alloy X-750 is used extensively in rocket-engine thrust chambers. Airframe applications include thrust reversers and hot-air ducting systems. Large pressure vessels are formed from INCONEL alloy X-750. Other applications are heat-treating fixtures, forming tools, extrusion dies, and test machine grips. For springs and fasteners, INCONEL alloy X-750 is used from sub-zero to 1200°F

Inconel X750 offers the following key features:

• Good creep rupture strength at high temperatures
• Not as strong as Nimonic 90
• Very good at cryogenic temperatures
• Age hardenable
• High temperature dynamic applications

Chemical Composition of Inconel X-750 Alloy

The chemical composition of Inconel X750 is indicated in the table below:

Typical Applications

Inconel X750 is known to be suitable for the following applications:

• Nuclear reactors
• Gas turbines
• Rocket engines
• Pressure vessels
• Aircraft structures

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