Alloy-X-750

INCONEL® Alloy X-750: Product Introduction

INCONEL® alloy X-750 is a precipitation-hardenable nickel-chromium alloy known for its exceptional strength, corrosion resistance, and high-temperature performance. This alloy is extensively utilized across various industries for its reliability and versatility in extreme environments.

Chemical Composition

Element	Composition (%)
Nickel (Ni)	70.0 min
Chromium (Cr)	14.0-17.0
Iron (Fe)	5.0-9.0
Niobium (Nb)	0.70-1.20
Aluminum (Al)	0.40-1.00
Titanium (Ti)	2.25-2.75
Silicon (Si)	0.50 max
Manganese (Mn)	1.00 max
Carbon (C)	0.08 max
Sulfur (S)	0.01 max

Mechanical Properties

Property	Value
Tensile Strength	1034 MPa (150 ksi) min
Yield Strength (0.2% offset)	827 MPa (120 ksi) min
Elongation	25% min
Hardness (Rockwell C)	36-42
Density	8.28 g/cm³

Performance at Different Temperatures

Temperature Range	Performance
Room Temperature	High strength and corrosion resistance
Elevated Temperatures (up to 704°C / 1300°F)	Retains strength and oxidation resistance
Cryogenic Temperatures	Maintains toughness and ductility

Industry Applications

INCONEL® alloy X-750 finds extensive applications across various industries:

Industry	Applications
Aerospace	Engine components, thrust chambers, rocket motors
Gas Turbines	Combustion chambers, seals, rotor blades
Nuclear	Reactor cores, nuclear fuel element spacers
Industrial Heating	Heat exchanger tubing, furnace components

Shapes, Sizes, and Production Standards

Shapes and Sizes

Form	Size Range
Sheets	Thickness: 0.5 mm – 50 mm
Plates	Thickness: 1 mm – 100 mm
Bars	Diameter: 6 mm – 300 mm
Wire	Diameter: 0.1 mm – 10 mm
Tubes	Outer Diameter: 3 mm – 200 mm
Pipes	Outer Diameter: 6 mm – 300 mm
Forgings	Various shapes and sizes as per standards

Production Standards and Corresponding Grades

Country	Standard	Corresponding Grade
United States	AMS 5542/AMS 5598, AMS 5582/AMS 5583, AMS 5667/AMS 5668, ASTM B637	UNS N07750
Germany	DIN 2.4669	X750
France	AFNOR NC15TNbA	–
United Kingdom	–	–
Japan	–	–
China	GB GH4145	–

Welding, Processing, Polishing, Heat Treatment, and Cold Processing

Process	Details
Welding	GTAW and GMAW methods recommended; post-weld heat treatment advised
Machining	Carbide tools and coolants for precision machining
Polishing	Mechanical and chemical methods to achieve desired finish
Heat Treatment	Solution annealing followed by age hardening
Cold Processing	Suitable for forming and bending processes

Conclusion

INCONEL® alloy X-750 is a versatile material suitable for critical applications requiring high strength, corrosion resistance, and reliability at elevated temperatures. Its well-defined chemical composition, robust mechanical properties, and adherence to international production standards make it a preferred choice in aerospace, gas turbines, nuclear, and industrial heating sectors globally. Engineers and designers seeking a durable alloy for extreme environments can confidently consider INCONEL® alloy X-750.

For detailed technical specifications and customized solutions, consulting with material suppliers and referencing specific product data sheets is recommended.