VT machining offers CNC Turning for Inconel 718 (UNS N07718 / 2.4668), typically supplied solution-treated or aged. Precipitation-hardened superalloy; strongest of the common Inconels to ~650 °C.
CNC Turning Notes for Inconel 718
On the lathe Inconel 718 needs chip-breaker inserts and constant chip load to avoid long, stringy swarf.
For estimating, a 100 × 100 × 10 mm block of Inconel 718 weighs about 0.82 kg.
Starting Parameters for CNC Turning Inconel 718
| Cutting speed (carbide) | 15-35 m/min |
|---|---|
| Feed | 0.05-0.15 mm/rev |
| Spindle speed, Ø25 mm bar | 190-450 rpm |
| Insert / tool class | ISO H — CBN or fine-grain carbide |
| Coolant | High-pressure emulsion; ceramic inserts run dry for roughing |
Starting values for Inconel 718, Solution-treated or aged; optimised on the first article.
Inconel 718 Data Relevant to CNC Turning
| Equivalent designations | UNS N07718 / 2.4668 |
|---|---|
| Key composition | Ni 50-55%, Cr 17-21%, Nb 4.75-5.5%, Mo |
| Typical supply condition | Solution-treated or aged |
| Hardness (typical) | Up to ~40-45 HRC aged |
| Machinability rating | 10% (AISI B1112 = 100%) |
Typical values; we work to your drawing and mill certificate.
How Inconel 718 Differs
Precipitation-hardened superalloy; strongest of the common Inconels to ~650 °C.
Typical applications: Turbine discs, fasteners, oil & gas tools.
Inconel 718 vs Similar Grades
| Inconel 718 | Inconel 625 | Incoloy 800 | Inconel 600 | |
|---|---|---|---|---|
| Key composition | Ni 50-55%, Cr 17-21%, Nb 4.75-5.5%, Mo | Ni ≥58%, Cr 20-23%, Mo 8-10%, Nb 3.15-4.15% | Ni 30-35%, Cr 19-23%, Fe bal. | Ni ≥72%, Cr 14-17%, Fe 6-10% |
| Hardness | Up to ~40-45 HRC aged | ~95 HRB-25 HRC | ~75-85 HRB | ~75-90 HRB |
| Tensile (MPa) | ~1240-1400 aged | ~830-930 | ~600 | ~620 |
| Machinability % | 10 | 12 | 20 | 15 |
| Typical use | Turbine discs, fasteners, oil & gas tools | Marine, aerospace ducting, chemical | Heat exchangers, furnace parts | Furnace parts, heat-treat fixtures, nuclear |
More on CNC Turning Inconel
Finishing options, quality documentation and general cnc turning guidance for all inconel grades are on our CNC Turning Inconel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Turning Inconel 718
Send a STEP/IGES model or PDF drawing, confirm Inconel 718 and its condition (we usually see it supplied solution-treated or aged), the quantity, critical tolerances and any finish or certificate requirements.
Inconel 718 in Other Processes
Related
Send the drawing, the Inconel 718 condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
What material thickness or size range suits CNC Turning Inconel 718?
Turned Inconel 718 parts are produced from bar or chuck stock across a wide diameter range.
Why is Inconel 718 a good choice for CNC Turning?
Inconel 718 is high-temperature strength and oxidation resistance, which makes it well suited to CNC Turning. We tune the process to the alloy so the finished Inconel 718 turning part meets your dimensional and functional requirements.
Can VT machining make custom Inconel 718 parts to my drawing?
Yes. Inconel 718 turning is made to order from your CAD/2D drawing. Share your geometry, material grade, tolerance and quantity and we will confirm feasibility, lead time and pricing.
Which industries use CNC Turning Inconel 718 parts?
CNC Turning Inconel 718 parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise Inconel 718 components are required.
What is CNC Turning Inconel 718 and how is it done?
CNC Turning Inconel 718 refers to cNC turning rotates the workpiece against a single-point tool to produce cylindrical features, threads and grooves. Applied to Inconel 718 — high-temperature strength and oxidation resistance — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.
What is the typical lead time and minimum order for CNC Turning Inconel 718?
CNC Turning prototypes for Inconel 718 can be produced quickly and scaled to series production. Send your drawing and quantity and we will advise lead time and any minimum order.