Spring performance
Good relaxation resistance for springs and fasteners when the correct condition is specified.
Precipitation-hardenable nickel-chromium alloy
Inconel X-750 Bar, Strip and Spring Material
A precipitation-hardenable nickel-chromium alloy used for high strength, oxidation resistance and spring or fastener performance from sub-zero to elevated temperatures.
Representative product-form image. Confirm actual surface, dimensions and condition with the quotation.Material overview
Why industrial buyers specify Inconel X-750
Alloy X-750 uses titanium, aluminum and niobium additions to develop precipitation-hardened strength. Different heat-treatment schedules are used for springs, fasteners, turbine components and sustained elevated-temperature loading, so the required condition is a central purchasing detail.
Elevated strength
Precipitation treatment develops tensile, creep and rupture capability for loaded components.
Oxidation resistance
Nickel-chromium base supports service in hot gas and thermal-processing environments.
Technical reference
Composition and purchasing data
Values below are published reference limits. The purchase order, applicable specification and mill test certificate control the supplied material.
Limiting chemical composition, weight %
| Element | Published limit |
|---|---|
| Nickel + cobalt | 70.00 min |
| Chromium | 14.0-17.0 |
| Iron | 5.0-9.0 |
| Titanium | 2.25-2.75 |
| Niobium + tantalum | 0.70-1.20 |
| Aluminum | 0.40-1.00 |
| Manganese | 1.00 max |
| Cobalt | 1.00 max |
| Silicon | 0.50 max |
| Copper | 0.50 max |
| Carbon | 0.08 max |
Key material facts
- Designation
- UNS N07750; W.Nr. 2.4669
- Density
- 8.28 g/cm3
- Strengthening
- Precipitation hardening; treatment varies by product form, target properties and service temperature.
- Temperature note
- High-strength use is commonly referenced to about 704 C, with useful heat-treated strength and oxidation resistance at higher temperatures depending on condition.
- Common supply
- Round bar, wire, strip, sheet, plate, forgings and cut blanks
Technical reference: manufacturer technical bulletin. Typical data is for material selection only and is not a design guarantee.
Common specifications
Standards buyers frequently reference
Specification editions and permitted product forms change. Send the exact standard, revision and condition shown on your drawing or material list.
| Product or requirement | Common reference |
|---|---|
| Bar and forgings | ASTM B637 |
| Sheet, strip and plate | AMS 5542 |
| Annealed bar and forgings | AMS 5667 |
| Heat-treated bar and forgings | AMS 5668 / AMS 5670 |
Availability is subject to grade, size, quantity, condition, certification and mill route. No standard listed here confirms stock.
Application areas
Where Inconel X-750 is commonly evaluated
Final material selection belongs to the buyer's qualified engineer and must consider temperature, stress, fabrication, corrosion medium and governing code.
Gas turbines
Rotor blades, wheels, bolts and structural members.
Springs and fasteners
High-temperature springs, bolts and retaining components.
Aerospace and rockets
Thrust chambers, thrust reversers and hot-air ducting.
Industrial tooling
Heat-treatment fixtures, forming tools, dies and test-machine grips.
RFQ checklist
Information needed for an accurate quotation
Clear specifications shorten material matching and reduce repeated email clarification.
1. Grade and standard
Inconel X-750, UNS N07750, ASTM/AMS/EN standard and required revision.
2. Product and dimensions
Round bar, wire, strip, sheet, plate, forgings and cut blanks. Include thickness, width, length, diameter and tolerances.
3. Condition
Solution treated, stabilized and/or precipitation hardened to the applicable AMS/ASTM requirement
4. Quantity
Pieces, kilograms or total project quantity, plus any trial-order requirement.
5. Inspection
MTC type, chemistry, mechanical tests, NDT, dimensional report and third-party inspection.
6. Delivery
Destination country or port, required date, packing and Incoterm preference.
Fast alloy inquiry
Send your Inconel X-750 size, quantity and destination.
We will review product form, specification, condition, certification and delivery requirements before preparing a targeted quotation.
Buyer questions
Inconel X-750 FAQ
Quick answers for initial sourcing. Confirm critical engineering requirements against the governing specification.
Why must the heat treatment be stated for X-750?
Different treatments produce different spring, tensile, creep and rupture properties. A grade name alone is not enough for an accurate quote.
Is X-750 suitable for springs?
Yes. It is widely used for springs and fasteners, but temper, aging schedule, dimensions and required mechanical properties must be specified.
What should an X-750 RFQ include?
Include product form, standard, condition, dimensions, quantity, mechanical-property requirements, testing and destination.
Related grades
Compare other core alloy pages
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