Inconel X-750
Supplied by Huaxiao-Alloy – Your Trusted Global Alloy Partner
1. Inconel X-750 Superalloy: A Material Engineered to Conquer Extremes
In the high-stakes world of advanced engineering, where failure is not an option, a material must do more than simply perform—it must endure. This is where Inconel X-750 shines. It’s not just a metal; it’s a precision-engineered solution designed to thrive in conditions that would cause conventional alloys to fail. As a precipitation-hardenable nickel-chromium superalloy, Inconel X-750 was developed for a single purpose: to provide unparalleled strength and resistance in the face of immense heat, stress, and corrosive environments.
Engineers in aerospace, power generation, and other critical sectors have long sought a material that can reliably bridge the gap between cryogenic cold and scorching heat. Inconel X-750 answers that call. It maintains its exceptional strength and structural integrity across a remarkable temperature range, from sub-zero conditions all the way up to 1300°F (700°C). With the right heat treatment, its useful strength extends even further, operating in environments up to an astonishing 1800°F (982°C).
At Huaxiao-Alloy, we see Inconel X-750 not merely as a product, but as a commitment to reliability. Its official designations—UNS N07750 and W. Nr. 2.4669—signify its global recognition, but its true value is measured by the successful projects and enhanced safety it brings to our clients.
Key Features of Inconel X-750 at a Glance
Exceptional Creep-Rupture Strength: This alloy has an uncanny ability to resist plastic deformation when subjected to prolonged, high-temperature stress, a common failure mode for lesser materials.
Broad Temperature Versatility: It provides outstanding mechanical properties from cryogenic lows to scorching highs, a versatility that few other alloys can match.
Superior Corrosion and Oxidation Resistance: Its high chromium content forms a formidable protective barrier, safeguarding the material from a wide variety of industrial corrosives, particularly chloride-ion stress corrosion cracking in its fully aged state.
Tailored Performance: As a precipitation-hardenable alloy, its properties are not fixed. We can precisely enhance its strength and hardness through specialized heat treatments to meet your exact application requirements.
2. Chemical Composition of Inconel X-750
| Element | Typical wt.% | Function |
|---|---|---|
| Nickel (Ni) | Balance (70 min) | Provides toughness, corrosion resistance |
| Chromium (Cr) | 14–17 | Oxidation resistance |
| Iron (Fe) | 5–9 | Solid solution strengthening |
| Titanium (Ti) | 2.25–2.75 | Gamma prime hardening |
| Aluminum (Al) | 0.4–1.0 | Gamma prime precipitation |
| Niobium + Tantalum (Nb+Ta) | 0.7–1.2 | Strengthening at high temperature |
| Cobalt (Co) | 1 max | Minor solid solution strengthening |
| Molybdenum (Mo) | 0.5 max | Creep resistance |
| Copper (Cu) | 0.5 max | Corrosion resistance |
| Carbon (C) | 0.08 max | Carbide reinforcement |
| Boron (B) | 0.01 max | Grain boundary strengthening |
This balanced chemistry ensures Inconel X-750 retains strength, oxidation resistance, and stability in aggressive environments.
3. Mechanical Properties of Inconel X-750
| Property | Value |
|---|---|
| Density | 8.28 g/cm³ |
| Melting Range | 1390–1430 °C |
| Tensile Strength at 20 °C | 1200 MPa |
| Yield Strength at 20 °C | 1000 MPa |
| Elongation | 18 percent |
| Hardness | 330 HB |
| Tensile Strength at 650 °C | ~1000 MPa |
| Creep Rupture Strength at 650 °C 100h | Excellent |
These properties show why Inconel X-750 is selected for long-term high stress service.
4. Heat Treatment Conditions
Inconel X-750 can be supplied in several heat treated conditions depending on end use:
Solution Annealed – for forming and machining.
Solution Annealed plus Age Hardened – for turbine components and springs.
Stress Relieved – for nuclear reactor applications.
Special Heat Treatments – to optimize creep rupture strength.
Huaxiao-Alloy provides tailored heat treatment services to meet customer-specific requirements.
5. High Temperature Performance
Retains high creep rupture strength up to 815 °C.
Maintains good oxidation resistance up to 980 °C.
Excellent resistance to chloride ion stress corrosion cracking.
Stable gamma prime precipitates ensure long service life.
This makes it particularly suited for turbine engines, nuclear reactors, and chemical plants.
6. Applications of Inconel X-750
6.1 Aerospace Industry
Gas turbine blades, discs, and seals
Aircraft exhaust systems
Springs operating at high temperatures
Rocket engine components
6.2 Nuclear Industry
Reactor core structures
Nuclear steam generator springs
Fuel element spacers
6.3 Chemical Processing
Heat exchangers and reactor vessels
Valves and fittings exposed to corrosive media
Gas scrubber internals
6.4 Power Generation
Turbine rotors and blades
High temperature fasteners
Transition ducts
6.5 Industrial Uses
Heat treating fixtures
Extrusion dies and tooling
Springs for corrosive and high temperature service
7. Advantages of Inconel X-750
High tensile and yield strength at room and elevated temperatures.
Good fatigue and creep rupture resistance.
Excellent oxidation and corrosion resistance.
Availability in multiple forms and heat treatments.
Long history of proven performance in aerospace and nuclear industries.
8. Limitations of Inconel X-750
Susceptible to embrittlement in long term service above 700 °C.
Slightly lower creep resistance compared to newer alloys like Inconel 718.
Requires controlled heat treatment to avoid microstructural instability.
Cost is higher than standard stainless steels.
9. Comparison with Related Alloys
| Alloy | Max Service Temp °C | Creep Resistance | Applications |
|---|---|---|---|
| Inconel X-750 | 815 | High | Turbines, springs, nuclear |
| Inconel 718 | 700 | Very High | Aerospace engines, fasteners |
| Inconel 625 | 980 | Moderate | Chemical and marine industries |
| Inconel 617 | 980 | Very High | Power generation, gas turbines |
10. Forms Supplied by Huaxiao-Alloy
Bars and rods
Plates and sheets
Strips and foils
Wires and springs
Forgings and rings
Custom machined parts
All products are available with certifications (ASTM, AMS, ISO, SGS) and full traceability documentation.
11. Processing and Fabrication
Machining: Similar to other nickel alloys, requires rigid tooling and slow feeds.
Welding: Gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW) possible with proper filler.
Forming: Hot forming between 980–1175 °C, cold forming requires high forces.
Heat Treatment: Supplied in annealed or age hardened conditions.
12. Why Choose Huaxiao-Alloy as Your Inconel X-750 Supplier?
At Huaxiao-Alloy, we combine technical expertise with supply reliability to support global industries.
Wide product range: bars, plates, wires, forgings, custom parts.
Global logistics: on-time delivery across Europe, America, and Asia.
Competitive pricing: strong supply chain and direct sourcing.
Quality assurance: certified materials with strict inspections.
Customer support: technical guidance and material selection advice.
📩 Email: [email protected]
📱 WhatsApp: +1 (579) 300-2733
13. Technical Data Sheet
Standards: ASTM B637, AMS 5667, AMS 5668, AMS 5669
Forms: Bar, plate, sheet, strip, wire, forging
Heat Treatments: Solution annealed, age hardened
It is used in gas turbines, jet engines, nuclear reactors, and chemical processing equipment where high strength and oxidation resistance are critical.
It is typically used up to 815 °C under load and up to 980 °C in non-loaded conditions.
Inconel 718 offers better creep resistance and higher strength at intermediate temperatures, but X-750 is preferred for springs and nuclear applications.
Yes, with careful welding procedures using matching filler metals and post-weld heat treatment.
Yes, we provide finished components manufactured to customer drawings and specifications.
The Ultimate Guide to Inconel X-750—Unrivaled Performance for Extreme Environments
Call Us Now!!!
Recent Blog
If you found this article good, feel free to share it on your other social media platforms.
