Materials · Inconel
Inconel X750 fasteners
HAGUE FASTENERS makes Inconel X750 fasteners to order: bolts, studs, nuts and machined parts in Inconel X750 (UNS N07750), made to your drawing from certified, traceable bar. A precipitation hardening nickel alloy for high strength and creep resistance at temperature.
165 ksi
Minimum tensile strength (1138 MPa), equalised and precipitation treated
105 ksi
Minimum yield strength (724 MPa, 0.2% offset)
816°C
Up to 1500°F with high stress rupture strength
UNS N07750
Also W.Nr. 2.4669
About the alloy
Strength that lasts at temperature
HAGUE FASTENERS makes Inconel X750 fasteners in the UK for gas turbines, nuclear plant and high temperature equipment. Alloy X-750 is a precipitation hardenable nickel-chromium-iron alloy, strengthened by titanium and aluminium, that is highly resistant to chemical corrosion and oxidation.
After suitable heat treatment it has high stress rupture strength and low creep rates under high stress at temperatures up to 1500°F (816°C). That combination has made it a long established choice for high temperature bolts and springs. See all Inconel alloys.
At a glance
- Precipitation hardening nickel alloy
- High stress rupture strength
- Low creep rates under high stress
- Resists chemical corrosion and oxidation
Chemical composition
Inconel X750 chemical composition
Weight %. Other elements: Nb (+Ta) 0.70 to 1.20. *Cobalt not required for routine acceptance.
| Element | Min % | Max % |
|---|---|---|
| Cr | 14.00 | 17.00 |
| C | – | 0.08 |
| Si | – | 0.50 |
| Cu | – | 0.50 |
| Mn | – | 1.00 |
| Fe | 5.00 | 9.00 |
| Ti | 2.25 | 2.75 |
| Al | 0.40 | 1.00 |
| Ni + Co | 70.00 | – |
| S | – | 0.01 |
| Co* | – | 1.00 |
Mechanical properties
Inconel X750 mechanical properties
Condition: equalised plus precipitation treated.
| Property | Value |
|---|---|
| Tensile strength | 165 ksi (1138 MPa) min. |
| Yield strength (0.2% offset) | 105 ksi (724 MPa) min. |
| Elongation in 2 in (50 mm) or 4D (%) | 20 min. |
| Reduction of area (%) | 25 min. |
| Hardness | 302 to 363 BHN |
These figures are for general information only and may change without notice. We believe them to be accurate, but HAGUE FASTENERS LIMITED gives no warranty and accepts no liability for their accuracy or completeness. Actual properties may vary, and nothing here guarantees the material for a particular use.
Applications
Where Inconel X750 is used
Alloy X-750 has been used for high temperature structural members in gas turbines, jet engine parts, nuclear power plant, heat treating fixtures, forming tools and extrusion dies.
- Gas turbine bolting and structural parts
- Nuclear power plant components
- Heat treating fixtures
- Forming tools and extrusion dies
Designations
Alternative designations and specifications
Alloy X750, INCONEL X-750, N07750, B637, SB637, 5542, 5582/3, HR 505, NC 15Fe-T, 2.4669
What we make
Inconel X750 fasteners and components
Made to your drawing or to the standard you specify.
Certification and testing
Certified, traceable and tested
Inconel X750 bar comes from approved UK, EU or US mills with heat traceability to release. We supply EN 10204 3.1 or 3.2 certificates, PMI where specified and independent UKAS-accredited testing. Heat treatment is by approved partners, with furnace charts on request. See quality and testing.
Questions
Frequently asked questions
What are Inconel X750 fasteners used for?
Inconel X750 fasteners are used where high strength must be held at high temperature, such as gas turbines, nuclear plant and heat treatment equipment.
What is the difference between Inconel X750 and Inconel 718?
Both are age hardened nickel alloys used for high temperature bolting, but X750 is strengthened mainly by titanium and aluminium and 718 mainly by niobium. Your specification usually decides between them; see Inconel 718.
Can you arrange the heat treatment for X750?
Yes. Equalising and precipitation treatment are carried out by our audited, approved heat treatment partners, with furnace charts on request.
What is the equivalent of Inconel X750?
Inconel X750 is also known as Alloy X-750, UNS N07750 and W.Nr. 2.4669.
Inconel X750 enquiry?
Send us your drawing or specification
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