Looking for reliable CNC Plasma Cutting Kovar? VT machining manufactures Kovar parts to tight tolerances and consistent quality. Kovar is matched thermal expansion for glass/ceramic seals, so the process is set up specifically for the material.
Process Data for CNC Plasma Cutting Kovar
| Max practical thickness | ~20 mm (high-definition plasma) |
|---|---|
| Edge tolerance | ±0.3-0.5 mm, 1-3° bevel |
| Heat-affected zone | ~0.5-1.5 mm (allow machining stock if critical) |
| Plasma gas | Nitrogen or argon-hydrogen |
Shown for Kovar, the most common Kovar grade we see for CNC Plasma Cutting. Typical values for Kovar, Annealed; confirmed on the first part.
CNC Plasma Cutting Capability for Kovar
- Plate to 30+ mm
- High cutting speed
- Conductive metals
- Bevel-cut capable
Kovar material properties, finishing options and grade notes are on our CNC Laser Cutting Kovar page.
How CNC Plasma Cutting Kovar Works
A focused fibre-laser beam melts and blows material from the Kovar sheet along the programmed contour. Power, focal position, nozzle stand-off and assist-gas pressure are tuned to the alloy and thickness for a clean, square edge.
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 Plasma Cutting Kovar
| Feature | Standard | Precision |
|---|---|---|
| Contour dimension | ±0.10 mm | ±0.05 mm |
| Hole diameter | ±0.10 mm | ±0.05 mm |
| Kerf width | 0.20 mm | 0.10 mm |
| Squareness of cut edge | 0.5° | 0.2° |
| Heat-affected zone | 0.15 mm | 0.05 mm (N₂ assist) |
| Minimum hole diameter | 1.2 × thickness | 1.0 × thickness |
| Edge condition | light dross | burr-free, N₂ cut |
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 Plasma Cutting Tolerances & Surface Finish
Laser-cut Kovar holds contour tolerances around ±0.05 mm depending on thickness, with a narrow kerf and a clean, near burr-free edge.
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 Plasma Cutting Kovar
Small design adjustments often cut cost and lead time. Keeping holes no smaller than the material thickness, allowing for kerf, and grouping features sensibly improves edge quality and nesting yield on Kovar. If you send your model early, we will return practical DFM feedback before you commit to production.
Applications of CNC Plasma Cutting Kovar
Kovar parts made this way are found throughout aerospace, medical, automotive, electronics and industrial equipment. Prototype, bridge and production volumes are all welcome.
Typical Kovar Parts for CNC Plasma Cutting
Illustrative examples of CNC Plasma Cutting Kovar 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.
Control panel face
- Material
- Kovar
- Size
- 400 × 300 × 1.5 mm
- Key callouts
- Cutout position ±0.10 mm, no dross on visible face
- Batch
- 600 pcs
Cut with nitrogen so the edge takes powder coat without secondary grinding.
Bracket blank
- Material
- Kovar
- Size
- 250 × 120 × 4 mm
- Key callouts
- Contour ±0.10 mm, bend-relief notches
- Batch
- 800 pcs
Bend reliefs cut in at the same time so the press brake does not tear the corner.
Battery busbar
- Material
- Kovar
- Size
- 180 × 30 × 2 mm
- Key callouts
- Contour ±0.08 mm, hole ±0.05 mm
- Batch
- 2,000 pcs
Copper is cut on the fibre laser with a reflective-material head; not every shop can run it.
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 Plasma Cutting Kovar
- 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 Kovar 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 Plasma Cutting
Other Processes for Kovar
Send the drawing, the Kovar 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 is CNC Plasma Cutting Kovar and how is it done?
CNC Plasma Cutting Kovar refers to cNC plasma cutting uses an ionized gas jet to sever thicker conductive plate at high speed. Applied to Kovar — matched thermal expansion for glass/ceramic seals — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.
Why is Kovar a good choice for CNC Plasma Cutting?
Kovar is matched thermal expansion for glass/ceramic seals, which makes it well suited to CNC Plasma Cutting. We tune the process to the alloy so the finished Kovar cutting part meets your dimensional and functional requirements.
Can VT machining make custom Kovar parts to my drawing?
Yes. Kovar cutting 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.
How clean are the edges produced by CNC Plasma Cutting on Kovar?
Laser cutting leaves Kovar with a narrow kerf and a clean, near burr-free edge and only a small heat-affected zone.