CNC Precision Machining C145 Tellurium Copper is part of VT machining's grade-specific capability. C145 Tellurium Copper is free-machining with high conductivity, and we combine controlled machining with material-aware setup to produce parts that meet your specification.
CNC Precision Machining Capability for C145 Tellurium Copper
- Free-machining copper
- ~90% IACS conductivity
- Tolerance to ±0.01 mm
- Electrical contacts
C145 Tellurium 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 C145 Tellurium Copper with CNC Precision Machining
When machining C145 Tellurium Copper, machinability is excellent (free-machining copper) with high conductivity retained. Our process plan reflects this so the finished part holds its tolerances without distortion or poor finish.
Documented parameters for C145 Tellurium Copper mean predictable cycle times and stable, repeatable results.
Achievable Tolerances for CNC Precision Machining C145 Tellurium Copper
| 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.
Why C145 Tellurium Copper?
Customers select C145 Tellurium Copper for CNC Precision Machining because it is free-machining with high conductivity. We handle grade verification and any required heat treatment or finishing.
CNC Precision Machining Quality & Inspection
Quality is built in, not inspected on. We monitor key features during the run and confirm them at final inspection, with CMM verification available for tight tolerances. We provide the inspection and traceability records your quality system requires.
CNC Precision Machining Tolerances & Surface Finish
For CNC Precision Machining, 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.
Exact achievable figures depend on the alloy, the feature size and the part geometry. Tell us which dimensions are critical and we will advise feasibility up front.
Secondary Operations & Finishing
Most C145 Tellurium Copper parts need some finishing, which we manage in-house or through vetted partners. Options include deburring and edge-breaking, heat treatment, surface grinding, polishing, and plating or anodising for corrosion resistance and appearance. Give us the finished-part requirement and we will sequence every operation correctly.
Design Tips for CNC Precision Machining C145 Tellurium Copper
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 C145 Tellurium Copper. If you send your model early, we will return practical DFM feedback before you commit to production.
Applications of CNC Precision Machining C145 Tellurium Copper
C145 Tellurium Copper parts made this way are found throughout aerospace, medical, automotive, electronics and industrial equipment. Prototype, bridge and production volumes are all welcome.
How to Order CNC Precision Machining C145 Tellurium Copper
Starting your project takes one email. Send your CAD or 2D drawing, the C145 Tellurium Copper grade and condition, the quantity and any finish or inspection requirements. We respond quickly with price, lead time and any DFM notes, in clear English.
Finishing Options for C145 Tellurium 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 Precision Machining C145 Tellurium 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 C145 Tellurium 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.
C145 Tellurium Copper in Other Processes
Related
Send the drawing, the C145 Tellurium Copper condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
What tolerances can you hold for CNC Precision Machining C145 Tellurium Copper?
Achievable tolerances for C145 Tellurium Copper 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 material thickness or size range suits CNC Precision Machining C145 Tellurium Copper?
We machine C145 Tellurium Copper across a broad size range; share your part envelope for confirmation.
Does CNC Precision Machining C145 Tellurium Copper require dedicated tooling?
Most C145 Tellurium Copper machining work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
Can VT machining make custom C145 Tellurium Copper parts to my drawing?
Yes. C145 Tellurium Copper C145 Tellurium Copper 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.