CNC Sinker EDM C101 Copper from VT machining delivers precision C101 Copper parts made to your exact drawing. Sinker (die-sink) EDM burns a shaped electrode into metal to form precise cavities and blind features, with parameters tuned to C101 Copper, which is excellent electrical and thermal conductivity.
CNC Sinker EDM Capability for C101 Copper
- Excellent conductivity
- Thermal management
- Tolerance to ±0.02 mm
- Solderable
C101 Copper Material Data
| Density | 8.94 g/cm³ |
|---|---|
| Tensile strength | 220–350 MPa |
| Yield strength (0.2%) | 70–330 MPa |
| Hardness | 40–100 HV |
| Melting point | 1083 °C |
| Thermal conductivity | 391 W/m·K |
| Thermal expansion | 17.0 ×10⁻⁶/K |
| Electrical conductivity | 101% |
| Machinability (C36000 = 100%) | 20% |
| Grades we run | C10100 OFE, C10200 OF, C11000 ETP, C14500 tellurium copper |
Published typical values for C11000 ETP. Other grades in the family differ — the certificate supplied with your order carries the actual heat-lot figures.
It smears rather than cuts. Razor-sharp uncoated tooling and high rake; if the print allows it, C14500 tellurium copper machines four times better at ~90% IACS.
Machining C101 Copper with CNC Sinker EDM
The machinability of C101 Copper is moderate; gummy, so sharp tooling and coolant are used. For CNC Sinker EDM we select tooling, feeds, speeds and coolant to match, keeping the C101 Copper workpiece stable and the result accurate.
Because we machine C101 Copper regularly, proven settings shorten setup and keep quality repeatable across reorders.
Achievable Tolerances for CNC Sinker EDM C101 Copper
| Feature | Standard | Precision |
|---|---|---|
| Profile dimension | ±0.010 mm | ±0.002 mm |
| Internal corner radius | 0.15 mm | 0.05 mm |
| Taper control over 50 mm | 0.02 mm | 0.005 mm |
| Surface finish (skim passes) | Ra 0.8 µm | Ra 0.2 µm |
| Recast layer | 10 µm | 2 µm (fine skim) |
| Start-hole diameter | 1.0 mm | 0.25 mm |
| Workpiece hardness | no limit (conductive) | no limit (conductive) |
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 Sinker EDM Quality & Inspection
Consistent quality comes from disciplined process control. Critical dimensions on C101 Copper parts are checked in-process and verified at final inspection using calibrated instruments and, where required, CMM measurement. Full documentation — dimensional reports, mill certs, FAIR — is available when your programme needs it.
CNC Sinker EDM Tolerances & Surface Finish
EDM holds tolerances to roughly ±0.002–0.005 mm with no cutting force on the C101 Copper part, producing fine, controlled surface textures and sharp internal corners impossible to mill.
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.
Secondary Operations & Finishing
We complete C101 Copper components with the secondary steps your drawing calls for. We arrange heat treatment, surface treatment, marking and assembly as needed. Tell us the final spec and we will plan the full route so parts arrive ready to use.
Design Tips for CNC Sinker EDM C101 Copper
A few design choices make a real difference to cost and quality. EDM suits sharp internal corners, thin ribs and hardened C101 Copper that cannot be milled; allowing a small corner radius where possible speeds the cut. If you send your model early, we will return practical DFM feedback before you commit to production.
Why C101 Copper?
Specifying C101 Copper for CNC Sinker EDM C101 Copper is usually about its properties: excellent electrical and thermal conductivity. Tell us the condition you need and we machine to it.
Applications of CNC Sinker EDM C101 Copper
CNC Sinker EDM of C101 Copper supports parts across aerospace, medical, automotive, electronics, semiconductor, energy and general industrial sectors. We scale from one-off prototypes to ongoing production while holding the same quality.
How to Order CNC Sinker EDM C101 Copper
Ordering C101 Copper parts is straightforward. Provide the drawing, material, quantity and any certification needs. Our engineers reply — in English — with feasibility, pricing and a realistic lead time, usually within one business day.
Finishing Options for C101 Copper
| Finish | Thickness / effect | Why it gets specified |
|---|---|---|
| Tin plate | 3–15 µm | Solderable, prevents oxidation |
| Silver plate | 2–10 µm | Lowest contact resistance for RF and power |
| Nickel underplate | 2–5 µm | Diffusion barrier under tin or gold |
| Gold flash | 0.05–1 µm | Contact surfaces, over nickel |
| Deburr / edge break | 0.05–0.3 mm | All parts unless the drawing says otherwise |
| Bead blast | Ra 1.6–3.2 µm | Uniform matt finish, hides tool marks |
| Laser marking | — | Part number, lot code, data matrix |
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 Sinker EDM C101 Copper
- 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 C101 Copper 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.
C101 Copper in Other Processes
Related
Send the drawing, the C101 Copper condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
How clean are the edges produced by CNC Sinker EDM on C101 Copper?
Machined C101 Copper edges are clean and to specification; edge-break or deburring is added when your drawing calls for it.
Does CNC Sinker EDM C101 Copper require dedicated tooling?
Wire EDM needs no shaped tooling; sinker EDM uses a shaped electrode we produce in-house for your cavity.
What tolerances can you hold for CNC Sinker EDM C101 Copper?
Achievable tolerances for C101 Copper EDM machining depend on the alloy, geometry and feature size. EDM holds tolerances to around ±0.002 mm with no cutting force on the part. Exact figures are confirmed against your drawing callouts.
Which industries use CNC Sinker EDM C101 Copper parts?
CNC Sinker EDM C101 Copper parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise C101 Copper components are required.
Can you EDM-machine hardened C101 Copper?
Yes. EDM removes material by electrical discharge rather than cutting force, so hardened and difficult C101 Copper can be machined to fine detail and tight tolerance without distortion.
What material thickness or size range suits CNC Sinker EDM C101 Copper?
We machine C101 Copper across a broad size range; share your part envelope for confirmation.