VT machining offers CNC Drilling for C122 Copper (UNS C12200 / DHP / Cu-DHP), typically supplied annealed or H55. Phosphorus-deoxidised; brazes and welds well but lower conductivity (~85% IACS).
CNC Drilling Notes for C122 Copper
Drilling C122 Copper uses through-coolant carbide drills and peck cycles, because the chip tends to weld and the hole wall work-hardens if the drill dwells.
For estimating, a 100 × 100 × 10 mm block of C122 Copper weighs about 0.89 kg.
Starting Parameters for CNC Drilling C122 Copper
| Cutting speed (carbide) | 85-165 m/min |
|---|---|
| Feed, Ø8 mm drill | 0.064-0.175 mm/rev |
| Spindle speed, Ø8 mm | 3380-6570 rpm |
| Peck depth | 1-3 × D |
| Insert / tool class | ISO N — sharp, polished, uncoated or DLC |
| Coolant | Emulsion; very sharp polished tools to avoid smearing |
Starting values for C122 Copper, Annealed or H55; optimised on the first article.
Full material data for C122 Copper (UNS C12200 / DHP / Cu-DHP) is on the CNC Milling C122 Copper page.
More on CNC Drilling Copper
Finishing options, quality documentation and general cnc drilling guidance for all copper grades are on our CNC Drilling Copper page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Drilling C122 Copper
Send a STEP/IGES model or PDF drawing, confirm C122 Copper and its condition (we usually see it supplied annealed or H55), the quantity, critical tolerances and any finish or certificate requirements.
C122 Copper in Other Processes
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Send the drawing, the C122 Copper condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
Why is C122 Copper a good choice for CNC Drilling?
C122 Copper is excellent electrical and thermal conductivity, which makes it well suited to CNC Drilling. We tune the process to the alloy so the finished C122 Copper machining part meets your dimensional and functional requirements.
What is CNC Drilling C122 Copper and how is it done?
CNC Drilling C122 Copper refers to programmed drilling produces accurately positioned holes, including deep and pattern hole arrays. Applied to C122 Copper — excellent electrical and thermal conductivity — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.
What surface finish is achievable on C122 Copper with CNC Drilling?
Surface finish on C122 Copper is controlled to your specification; we confirm the achievable Ra against your callout.
What tolerances can you hold for CNC Drilling C122 Copper?
Achievable tolerances for C122 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.
Can VT machining make custom C122 Copper parts to my drawing?
Yes. C122 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.
Does CNC Drilling C122 Copper require dedicated tooling?
Most C122 Copper machining work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.