Metal LPBF · Metal powders · Metal
Inconel® 718
A superalloy that keeps its strength up to 650 °C; turbine and rocket engine parts.
What is Inconel® 718?
Inconel 718 is a nickel-chromium-based superalloy that keeps its strength and oxidation resistance at high temperatures. It is used in gas turbine components, rocket engine parts and fasteners under extreme conditions.
- Metal
- Heat resistant
- High strength
- Chemical resistant
Technical data
Typical values compiled from common manufacturer datasheets; they vary by brand and grade.
| Density | ≈ 8.2 g/cm³ |
|---|---|
| Tensile strength (heat treated) | ≈ 1300 – 1400 MPa |
| Elongation at break | ≈ 12 – 20% |
| Service temperature | up to 650 °C |
Design guidelines for Inconel® 718
General guidelines for SLM / DMLS technology. All design guidelines
- Minimum wall thickness0.4 – 1 mm
- Smallest detail0.6 mm
- Clearance for moving parts0.3 mm
- Text and logosEmbossed ≥ 0.5 mm
- Minimum hole diameterØ 1.5 mm
- Unsupported overhang angle≥ 45° from horizontal; flatter surfaces need support
Applications
- Turbine components
- Rocket engine parts
- High-temperature fasteners
Advantages
- Strength at high temperature
- Oxidation resistance
Limitations
- Very expensive
- Difficult to machine
Comparison
Inconel® 718 and alternatives
| Property | Inconel® 718 | 17-4 PH stainless steel | Titanium Ti6Al4V | Stainless steel 316L |
|---|---|---|---|---|
| Density | 8.2 g/cm³ | 7.8 g/cm³ | 4.43 g/cm³ | 7.9 g/cm³ |
| Tensile strength | 1,350 MPa | 1,300 MPa | 1,000 MPa | 600 MPa |
| Elongation at break | 15 % | 9 % | 12 % | 38 % |
| Modulus (stiffness) | 200 GPa | 197 GPa | 114 GPa | 190 GPa |
| Heat deflection (0.45 MPa) | — | — | — | — |
Values are averages of typical ranges; see each material page for details.
Good to know
Frequently asked questions about Inconel® 718
What is Inconel® 718?
Inconel 718 is a nickel-chromium-based superalloy that keeps its strength and oxidation resistance at high temperatures. It is used in gas turbine components, rocket engine parts and fasteners under extreme conditions.
Is Inconel® 718 heat resistant?
Inconel® 718 is a metal; it keeps its strength at much higher temperatures than polymers.
Can Inconel® 718 be used outdoors?
Yes. Inconel® 718 has good resistance to UV light and weather; it is suitable for outdoor parts.
Which parts are made with Inconel® 718?
Inconel® 718 is typically used in applications such as turbine components, rocket engine parts, high-temperature fasteners.
Which material can be used instead of Inconel® 718?
Depending on the application, 17-4 PH stainless steel, Titanium Ti6Al4V, Stainless steel 316L can be alternatives. You can see the differences in the comparison tables on the material pages.
Does TAİ Robotik produce with Inconel® 718?
For Inconel® 718, send us your part's dimensions, quantity and operating conditions; we will determine the best production route and, if needed, an equivalent alternative together.
Let's choose the right material together
Tell us your needs for this material or an alternative we can produce.