Inconel X-750, Alloy X750, Alloy X-750, 2.4669, N07750

Grade	Code	UNS	Nickel Alloys
Inconel X-750	Alloy X-750 (2.4669)	N07750	Nickel Alloys

Nickel Alloy Properties

Inconel X-750 / Alloy X-750, a precipitation-hardenable nickel-chromium-based superalloy, is distinguished by its ability to retain strength at elevated temperatures. After appropriate heat treatment, it provides high tensile strength, good creep-rupture strength and stability under stress. It also offers good resistance to corrosion and oxidation, delivering reliable performance in demanding service conditions up to approximately 704°C.

Chemical Analysis (Inconel X-750 / Alloy X-750)

Ni %	Cr %	Nb+Ta %	Co %	Mn %	Si %	Al %	Ti %	Cu %	Fe %
70.00 min.	14.00 – 17.00	0.70 – 1.20	1.00 max.	1.00 max.	0.50 max.	0.40 – 1.00	2.25 – 2.75	0.50 max.	5.00 – 9.00

Mechanical Properties

Product Form	Condition	Size Range (mm)	Rp0.2, MPa	Rm, MPa	Elongation [%]	Hardness [HRC]	Density [g/cm³]
Plate	Precipitation Treated / Aged	4.75 – 101.6	≥ 690	≥ 1069	≥ 20	≥ 30	8.30
Round Bar	Solution Treated + Furnace-Cool Precipitation Treated	< 63.5 mm dia.	≥ 793	≥ 1172	≥ 18	32 – 42	8.30
Round Bar	Solution Treated + Furnace-Cool Precipitation Treated	63.5 – < 101.6 mm dia.	≥ 793	≥ 1172	≥ 15	32 – 42	8.30

Application Areas

Sector	3 Most Common Products / Component Groups
Aerospace and Gas Turbines	Turbine rotor blades, turbine discs / wheels, high-temperature fasteners
Rocket, Space and Defense	Rocket-engine thrust chambers, hot-air ducting systems, thrust reverser / directional components
Nuclear Energy	Reactor equipment, high-temperature springs, bolts and fasteners
Power Generation and Industrial Turbines	Industrial turbine components, turbine fasteners, high-temperature structural parts
Oil, Gas and Process Industry	Corrosion-resistant fasteners, high-temperature springs, process-equipment components
Heat Treatment and Metal Forming	Heat-treatment fixtures, forming tools, extrusion dies
Pressure Vessel and Industrial Equipment	Pressure-vessel parts, test-machine holders, high-strength fastening components

Remarks

Inconel X-750 / Alloy X-750 is notable for its high resistance to chloride-ion stress-corrosion cracking even in the precipitation-hardened condition. In addition, Inconel X-750 / Alloy X-750 provides good corrosion resistance in many oxidizing and reducing industrial environments and maintains resistance to oxidation and hot-corrosion effects at elevated temperatures. The high strength, creep-rupture resistance and stability under stress gained through precipitation hardening make the alloy reliable under demanding temperature and load conditions.

Specification

Inconel X-750, Alloy X-750, 2.4669, N07750.

Standards

Product Form	ASTM / ASME	AMS
Plate	ASTM B906*	AMS 5542 / AMS 5598
Round Bar	ASTM B637 / ASME SB637	AMS 5667 / AMS 5668 / AMS 5669 / AMS 5670 / AMS 5671 / AMS 5747

* For Inconel X-750 / Alloy X-750 plate, ASTM B906 may be used as a general requirements reference for “flat-rolled nickel and nickel alloys plate, sheet and strip”; however, it should not be considered as a standalone product-specific standard for X-750.