CNC Routing Inconel from VT machining delivers precision Inconel parts produced to your exact drawing. CNC routing cuts profiles and openings in sheet and plate at high feed rates with a rotating router bit, and we tune every parameter to the behaviour of Inconel, which is high-temperature strength and oxidation resistance.
Starting Parameters for CNC Routing Inconel
| Cutting speed (carbide) | 15-35 m/min |
|---|---|
| Feed per tooth | 0.018-0.053 mm |
| Spindle speed, Ø6 mm end mill | 800-1860 rpm |
| Insert / tool class | ISO H — CBN or fine-grain carbide |
| Coolant | High-pressure emulsion; ceramic inserts run dry for roughing |
Shown for Inconel 718, the most common Inconel grade we see for CNC Routing. Starting values for Inconel 718, Solution-treated or aged; optimised on the first article.
CNC Routing Capability for Inconel
- High-feed profiling
- Sheet and plate stock
- Nested-part layouts
- Edge tolerance ±0.1 mm
Inconel material properties, finishing options and grade notes are on our CNC Milling Inconel page.
How CNC Routing Inconel Works
Rotating multi-flute cutters remove material as the Inconel workpiece is driven through programmed tool paths on 3-, 4- or 5-axis machining centres. Climb milling, step-over and depth-of-cut are set so chip load stays in the ideal band for the alloy.
We start from your supplied geometry and tolerance scheme. The setup is designed to minimise re-clamping, which protects positional accuracy across features. A first article is verified against the drawing before the balance of the batch is released.
Achievable Tolerances for CNC Routing Inconel
| Feature | Standard | Precision |
|---|---|---|
| Linear dimension (< 100 mm) | ±0.05 mm | ±0.010 mm |
| Linear dimension (100–300 mm) | ±0.10 mm | ±0.025 mm |
| Hole diameter (reamed) | H9 | H7 |
| True position of hole pattern | ±0.10 mm | ±0.025 mm |
| Flatness over 100 mm | 0.05 mm | 0.015 mm |
| Perpendicularity | 0.10 mm | 0.020 mm |
| Surface finish, as machined | Ra 1.6 µm | Ra 0.4 µm |
Standard is what a normal quotation assumes. Precision is available on nominated features and is priced separately, because it needs extra setups, in-process gauging and CMM verification. Call out only the features that need it — blanket-tightening a drawing is the single most common reason a quote comes back expensive.
CNC Routing Tolerances & Surface Finish
For CNC Routing, dimensional and positional tolerances around ±0.01 mm are routine, tightening toward ±0.005 mm on precision setups. Surface finish on machined faces typically falls in the Ra 0.4–1.6 µm range depending on tooling and pass strategy.
The tightest tolerances are reserved for the features your drawing flags as critical. Share your tolerance scheme and we will confirm what is realistic before quoting.
Design Tips for CNC Routing Inconel
Small design adjustments often cut cost and lead time. Generous internal radii, sensible pocket depth-to-width ratios and avoiding very thin unsupported walls all reduce cost and improve accuracy in Inconel. If you send your model early, we will return practical DFM feedback before you commit to production.
Applications of CNC Routing Inconel
Inconel parts made this way are found throughout aerospace, medical, automotive, electronics and industrial equipment. Prototype, bridge and production volumes are all welcome.
Typical Inconel Parts for CNC Routing
Illustrative examples of CNC Routing Inconel parts and the callouts that usually drive the process plan. They show the kind of work that fits this process; they are not specific customer orders.
Manifold block
- Material
- Inconel
- Size
- 120 × 60 × 45 mm
- Key callouts
- Cross-bore intersection ±0.05 mm, ports G1/8", leak-tested to 10 bar
- Batch
- 80 pcs
Deburred internally with a brush tool; a burr at a cross-bore is what fails the leak test.
Heat sink base
- Material
- Inconel
- Size
- 200 × 100 × 8 mm
- Key callouts
- Fin thickness 1.2 ±0.05 mm, base flatness 0.03 mm
- Batch
- 500 pcs
Fins cut with a slotting cutter in one pass to avoid the deflection a step-over leaves.
Optical mount plate
- Material
- Inconel
- Size
- 160 × 160 × 12 mm
- Key callouts
- Hole pattern true position ±0.02 mm, flatness 0.01 mm
- Batch
- 40 pcs
Roughed, stress-relieved overnight, then finished — the plate is too thin to hold flatness in one hit.
No drawing yet? Build one in the browser.
Set the metal, dimensions and features, watch the 3D model update as you type, then switch to the 2D sheet to add dimensions and tolerances. Download it or send it straight to us with your RFQ.
What We Need to Quote CNC Routing Inconel
- GeometrySTEP or IGES for the 3D model, plus a PDF drawing if you have tolerance callouts. A dimensioned sketch is enough to start.
- MaterialThe exact Inconel grade and condition — temper, heat-treat state or hardness. If you are not sure, tell us the function and we will suggest one.
- QuantityPrototype count and the expected annual volume. Both change how the part is made and therefore what it costs.
- TolerancesWhich features are critical. Everything else runs to our standard tolerance, which is what keeps the price sensible.
- FinishSurface treatment, cosmetic requirements, and any faces that must be masked.
- DocumentsWhether you need a material certificate, dimensional report, FAIR or PPAP with the shipment.
Missing something from the list is not a problem — send what you have. We will come back with the specific questions rather than a generic form.
Other Metals for CNC Routing
Other Processes for Inconel
Send the drawing, the Inconel grade and the quantity. You get pricing, lead time and any DFM notes back — usually within one business day.
Request a QuoteFrequently Asked Questions
What material thickness or size range suits CNC Routing Inconel?
We machine Inconel across a broad size range; share your part envelope for confirmation.
Can VT machining make custom Inconel parts to my drawing?
Yes. Inconel machining 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.
Why is Inconel a good choice for CNC Routing?
Inconel is high-temperature strength and oxidation resistance, which makes it well suited to CNC Routing. We tune the process to the alloy so the finished Inconel machining part meets your dimensional and functional requirements.
What tolerances can you hold for CNC Routing Inconel?
Achievable tolerances for Inconel 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.