VT machining offers CNC Tapping 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 Tapping Notes for Inconel 718
Inconel 718 is tapped with cut taps (spiral-point for through holes) and controlled rigid-tapping speed; thread milling is used where tap breakage would be costly.
For estimating, a 100 × 100 × 10 mm block of Inconel 718 weighs about 0.82 kg.
Starting Parameters for CNC Tapping Inconel 718
| Cutting speed (carbide) | 5-10 m/min |
|---|---|
| Recommended tap | Cut tap: spiral-point (through) / spiral-flute (blind) |
| Tap drill for M8×1.25 | Ø6.8 mm (cut tap) |
| Spindle speed, M8 | 200-400 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.
Full material data for Inconel 718 (UNS N07718 / 2.4668) is on the CNC Milling Inconel 718 page.
More on CNC Tapping Inconel
Finishing options, quality documentation and general cnc tapping guidance for all inconel grades are on our CNC Tapping Inconel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Tapping 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
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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
Does CNC Tapping Inconel 718 require dedicated tooling?
Most Inconel 718 machining work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
What surface finish is achievable on Inconel 718 with CNC Tapping?
Surface finish on Inconel 718 is controlled to your specification; we confirm the achievable Ra against your callout.
Which industries use CNC Tapping Inconel 718 parts?
CNC Tapping Inconel 718 parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise Inconel 718 components are required.
What tolerances can you hold for CNC Tapping Inconel 718?
Achievable tolerances for Inconel 718 machining depend on the alloy, geometry and feature size. Milling holds positional and dimensional tolerances to around ±0.01 mm, tighter with precision setups. Exact figures are confirmed against your drawing callouts.
What is CNC Tapping Inconel 718 and how is it done?
CNC Tapping Inconel 718 refers to rigid CNC tapping cuts internal threads in sync with spindle feed for precise, repeatable thread engagement. 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.