Inconel X-750 Bar for High Strength Aerospace Fasteners

Description of Inconel X-750 Nickel Alloy Bar

Inconel X-750 (UNS N07750 / W.Nr. 2.4669) is a nickel-chromium alloy made precipitation-hardenable through controlled additions of aluminum and titanium. The resulting γ′ (gamma-prime) strengthening phase delivers high tensile and creep-rupture strength combined with excellent oxidation and corrosion resistance at elevated temperatures.

Our Inconel X-750 bars are supplied in the equalized + precipitation-treated condition (typically AMS 5667) or other approved heat-treatment conditions to meet the stringent requirements of aerospace fastener manufacturing. The material maintains exceptional stress-relaxation resistance, making it ideal for high-temperature bolts, studs, and structural fasteners that must retain clamping force under prolonged thermal exposure.

Feature of Inconel X-750 Round Bar

• Precipitation-Hardened High Tensile Strength – Typical room-temperature tensile strength of 160–180 ksi (1100–1240 MPa) and yield strength of 100–130 ksi after proper aging, providing the strength required for critical aerospace fasteners.

• Excellent High-Temperature Strength & Creep Resistance – Retains useful strength and low creep rates up to 1300°F (700°C), with service capability extending higher under certain conditions.

• Superior Stress-Relaxation Resistance – Outstanding ability to maintain preload in bolts and fasteners during long-term exposure to elevated temperatures—critical for gas turbine and aircraft applications.

• Oxidation & Corrosion Resistance – Strong resistance to oxidation up to approximately 1800°F and good resistance to a wide range of corrosive environments, including chloride stress-corrosion cracking in the fully aged condition.

• Cryogenic to High-Temperature Versatility – Reliable mechanical properties from sub-zero temperatures through the high-temperature regime

Video of Inconel X-750 Nickel Based Bar

Specification of Inconel 713C Round Rod

Inconel X-750 Bar Chemical composition%

Application Field of Inconel X-750 Nickel Alloy Rod

Inconel X-750 round bar is widely specified for:

• High-strength aerospace fasteners and bolting (bolts, studs, nuts, washers) requiring sustained clamping force at elevated temperatures

• Gas turbine engine components – rotor blades, wheels, structural members, and high-temperature bolts

• Rocket engine thrust chambers and related hardware

• Aircraft structures, thrust reversers, and hot-air ducting systems

• Nuclear reactor internals and high-temperature pressure vessel fasteners

• High-temperature springs and related elastic components

The combination of high strength, relaxation resistance, and oxidation performance makes Inconel X-750 bar a proven solution for safety-critical aerospace fastener applications.

About DLX - Introduction, Benefits, Services

CHANGZHOU DLX ALLOY CO, LTD  was established in 2002 and has got ISO9001 International Quality Management System Certificate and SGS Certificate. Our factory is professional in researching and producing special alloy material. From melting, drawing, heat treatment, finishing and testing .We offer nickel-based, copper-based, and iron-based alloys, including super alloy, welding materials, anti-corrosion alloy, precision alloy, FeCrAl alloy, NiCr alloy, CuNi alloy, thermocouple and etc, in the form of wire, strip, ribbon, bar, tube, plate.

FAQs of Inconel X-750 Bar

Q1: What heat-treatment condition should I choose for aerospace fasteners?

A: For maximum tensile strength and clamping force retention, AMS 5670 is preferred. AMS 5667 is recommended when better notch-rupture ductility up to 1100°F is required. Tell us your service temperature and we will advise the best condition.

Q2: Can this bar be used directly for machining high-strength bolts and studs?

A: Yes. Our Inconel X-750 bar is supplied in conditions ready for machining aerospace-grade fasteners and meets the mechanical properties required by AMS specifications for bolting applications.

Q3: What is the practical temperature limit for fasteners made from this material?

A: Continuous service up to 1300°F (700°C) with excellent stress-relaxation resistance. It is widely used for gas-turbine and airframe fasteners that must maintain preload at elevated temperature.