Inconel X-750
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Material Data Sheet
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.
Element | Content (%) |
---|---|
Nickel, Ni | 70.0 |
Chromium, Cr | 14.0 – 17.0 |
Iron, Fe | 5.0- 9.0 |
Titanium, Ti | ≤ 2.75 |
Niobium, Nb | ≤ 1.2 |
Manganese, Mn | ≤ 1.0 |
Cobalt, Co | ≤ 1.0 |
Aluminum, Al | ≤ 1.0 |
Silicon, Si | ≤ 0.50 |
Copper, Cu | ≤ 0.50 |
Carbon, C | ≤ 0.08 |
Sulfur, S | ≤ 0.01 |
Properties | Metric | Imperial |
---|---|---|
Density | 8.28 g/cm3 | 0.299 lbs/in3 |
Melting Range | 1393-1427 °C | 2540-2600 °F |
Properties | Metric | Imperial |
---|---|---|
Tensile Strength, Ultimate | 1250 MPa | 181000 psi |
Tensile Strength, Yield | 850 MPa | 123000psi |
Elongation at Break | 30% | 30% |
Modulus of Elasticity | 145 GPa | 21000 ksi |
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- Nuclear reactors
- Gas turbines
- Rocket engines
- Pressure vessels
- Aircraft structures
- Thrust chambers
- Forming Tools
- Extrusion Dies
- Springs and Fasteners
- Ducting systems
Key Words:MIL-N-7786, MIL-N-8550, MIL-S-23192, MIL-N-24114; NACE MR-01-75; AFNOR NC 15 FeT, SAE AMS 5542, 5582, 5583, 5598, 5667 – 5671, 5698, 5699, 5747, 7246, UNS N07750; BS HR505; ASTM B 637; ASME SB-637, Boiler Code Section III; Werkstoff Nr. 2.4669