Inconel Alloy X-750 /N 07750/2.4669 Bar Excellent Resistance To Oxidation And Corrosion At Elevated Temperatures
Inconel Alloy X-750 (UNS N07750 / W.Nr. 2.4669) is a high-strength, corrosion-resistant nickel-chromium alloy known for excellent performance in extreme environments. It offers outstanding oxidation and creep resistance at temperatures up to 1300°F (704°C) and retains good mechanical properties at cryogenic levels. Precipitation-hardened with additions of aluminum and titanium, X-750 is widely used in aerospace, gas turbines, nuclear reactors, and springs. The alloy exhibits excellent resistance to chemical corrosion and stress-corrosion cracking. Available in various forms, including bars, sheets, and wires, it is easy to machine in the annealed condition but hardens during processing. Common specifications include AMS 5667, AMS 5671, and ASTM B637. It is an ideal choice for demanding applications requiring durability and high-temperature strength.
Trade Code
| Chemical Composition Wt.% |
% |
Ni |
Cr |
Fe |
Nb+ta |
Co |
C |
Mn |
Si |
S |
P |
Cu |
Al |
Ti |
| Min |
70 |
14 |
5 |
0.7 |
|
|
|
|
|
|
|
0.40 |
2.25 |
| Max |
|
17 |
9 |
1.20 |
1.0 |
0.08 |
1.0 |
0.5 |
0.01 |
0.015 |
0.50 |
1.0 |
2.75
|
| Physical Constants |
Density(g/cm³) |
8.25 |
| Melting Range(℃) |
1395-1425 |
| Minimum mechanical properties of alloy at room temperature |
Typical mechanical properties |
Tensile strength Rm N/mm² |
Yield strength RP 0.2 N/mm² |
Elongation A5 % |
Brinell Hardness HB |
| Solution treatment |
910 |
550 |
25 |
≤350 |
Inconel Alloy X-750 (UNS N07750 / W. Nr. 2.4669) is a precipitation-hardened nickel-chromium alloy known for its excellent high-temperature strength and corrosion resistance.
Here are its key features:
1. High-Temperature Strength
- Retains strength and oxidation resistance up to 980°C (1800°F).
- Precipitation-hardened for increased mechanical properties at elevated temperatures.
2. Corrosion & Oxidation Resistance
- Excellent resistance to oxidation and corrosion in extreme environments.
- Resistant to chloride-ion stress corrosion cracking, making it suitable for marine and aerospace applications.
3. High Tensile & Creep-Rupture Strength
- Superior creep and stress-rupture resistance at high temperatures.
- Withstands extreme mechanical stress without deformation.
4. Good Fabricability & Machinability
- Can be formed, welded, and machined using standard techniques.
- Typically supplied in solution-annealed and precipitation-hardened conditions for best performance.
Inconel Alloy X-750 (UNS N07750 / W.Nr. 2.4669) is a precipitation-hardenable nickel-chromium alloy known for its excellent high-temperature strength, corrosion resistance, and oxidation resistance. It retains its mechanical properties even at extreme temperatures, making it suitable for various demanding applications.
Applications of Inconel X-750 Bars
1. Aerospace Industry
- Jet engine components (turbine blades, seals, and discs)
- Gas turbine rotors and stator components
- Aerospace structural elements
- Rocket engines and exhaust systems
2. Power Generation
- Steam turbine components
- Nuclear reactor core springs and fasteners
- Gas turbine hot section parts
3. Oil & Gas Industry
- High-temperature and high-pressure wellhead equipment
- Springs, fasteners, and components in offshore drilling
- Sour gas applications due to corrosion resistance
4. Automotive Industry
- Exhaust valves and turbocharger components for high-performance engines
5. Chemical Processing Industry
- Heat exchangers, reactors, and pressure vessels
- Corrosive environment components requiring strength at high temperatures
6. Springs & Fasteners
- High-performance springs, bolts, and washers for extreme conditions
- Used in nuclear reactors and aerospace applications
7. Marine & Defense Applications
- Components exposed to saltwater and extreme environments
- Submarine and naval propulsion systems
Why Use Inconel X-750?
- High strength and toughness at elevated temperatures (up to ~1300°F / 700°C)
- Excellent resistance to oxidation and corrosion
- Good creep and stress rupture resistance
- Precipitation-hardenable for improved mechanical properties
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