CNC Tapping 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 Tapping 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 Tapping
C145 Tellurium Copper behaves predictably under CNC Tapping once parameters are dialled in: machinability is excellent (free-machining copper) with high conductivity retained, and we tune the operation accordingly.
We hold reference parameters for this grade, so repeat orders of C145 Tellurium Copper run consistently from one batch to the next.
Achievable Tolerances for CNC Tapping 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.
Secondary Operations & Finishing
Finished C145 Tellurium Copper parts can move straight into secondary operations under one roof. Typical add-ons are deburring, passivation, anodising, plating, blasting, polishing and laser marking. We coordinate the whole chain so you receive complete, inspection-ready parts.
Why C145 Tellurium Copper?
C145 Tellurium Copper is chosen when a part needs what this grade offers — it is free-machining with high conductivity. We confirm the grade and any temper or heat-treat condition with you before machining.
CNC Tapping Tolerances & Surface Finish
For CNC Tapping, 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.
Final tolerances are governed by the material's behaviour, wall thickness and overall stiffness. We give honest DFM feedback if a callout would be costly or better achieved another way.
Design Tips for CNC Tapping C145 Tellurium Copper
We are happy to suggest design tweaks that improve manufacturability. 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.
CNC Tapping Quality & Inspection
We control quality throughout the process, not just at the end. In-process checks plus final inspection — including CMM where specified — keep every C145 Tellurium Copper part to print. Inspection reports, material certificates and first-article documentation can be supplied on request.
Applications of CNC Tapping C145 Tellurium Copper
Customers order CNC Tapping C145 Tellurium Copper components for everything from instrumentation to structural and functional assemblies. Whether you need a single prototype or recurring production volume, the same process discipline applies.
How to Order CNC Tapping C145 Tellurium Copper
Getting a quote is simple. Share your model, the material grade, your quantity and target tolerances. You receive a clear quotation with lead time and honest manufacturability feedback.
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 Tapping 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
Which industries use CNC Tapping C145 Tellurium Copper parts?
CNC Tapping C145 Tellurium Copper parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise C145 Tellurium Copper components are required.
How clean are the edges produced by CNC Tapping on C145 Tellurium Copper?
Machined C145 Tellurium Copper edges are clean and to specification; edge-break or deburring is added when your drawing calls for it.
What surface finish is achievable on C145 Tellurium Copper with CNC Tapping?
Surface finish on C145 Tellurium Copper is controlled to your specification; we confirm the achievable Ra against your callout.
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.
What is CNC Tapping C145 Tellurium Copper and how is it done?
CNC Tapping C145 Tellurium Copper refers to rigid CNC tapping cuts internal threads in sync with spindle feed for precise, repeatable thread engagement. Applied to C145 Tellurium Copper — free-machining with high conductivity — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.