Inconel X-750
Inconel X-750 Alloy
What is Inconel Alloy X-750?
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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.
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.
Depending on the application and the properties desired, various heat treatments are employed. For service above 1100°F, particularly where loads are to be sustained for long times, optimum properties are achieved by solution treating (2100°F) plus stabilization treating (1550°F) plus precipitation treating (1300°F). For service below 1100°F, the alloy may be strengthened by precipitation treating after hot or cold working or by precipitation treating after equalizing or solution treating. A furnace-cooling treatment is also used to develop optimum properties for some applications.
Inconel X-750 Standards
SAE AMS 5582
-Seamless Pipe & Tube
SAE AMS 5542
-Plate, Sheet, Strip & Foil
ASTM B637
-Rod, Bar & Forging
SAE AMS 5598
-Plate, Sheet, Strip & Foil
Inconel X-750 Chemical Composition
Inconel X-750 Data Sheet
Inconel X-750 Equivalent Grades
STANDARD | WERKSTOFF NR. | UNS | GOST | AFNOR | JIS | BS | EN | OR |
Alloy X-750 | 2.4669 | N07750 | – | – | – | – | – | – |
Inconel X-750 Mechanical Properties
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
8.28 g/cm3 | 1427°C (2600°F) | 1250Mpa | 850Mpa | 30% – 22% |
Inconel X-750 Physical Properties
Melting Range | Specific Heat, 20°C (J/(g.K)) | Magnetic Permeability (20°C) | Thermal Conductivity, 20°C (W/(m.K)) | Curie Temperature (°C) |
1427 °C (2600 °F) | – | <1.0035 | 12.0 | -193 |
Inconel X-750 Applications
Inconel X-750 Related Resources
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