Surface Finishing for Copper C110 (ETP Copper)
Copper surface finishing prevents tarnishing and oxidation while maintaining electrical/thermal properties. Plating and coatings must be selected carefully to preserve conductivity where needed.
Recommended Machining Parameters
| Parameter | Value |
|---|---|
| Achievable Tolerances | ±0.02 mm (±0.0008") |
| Surface Finish | Ra 0.2-1.6 μm |
| Cutting Speed | N/A |
| Feed Rate | N/A |
| Tooling Recommendations | N/A — surface finishing process |
Expert Machining Tips
1
Tin plating for solderability and corrosion protection
2
Silver plating for high-frequency applications
3
Nickel plating for general protection
4
Clear coat for display parts
Common Parts Made
Tin-plated terminals
Silver-plated waveguides
Nickel-plated heat sinks
Clear-coated display pieces
Machining Challenges
- Copper oxidizes rapidly without protection
- Some coatings reduce conductivity
- Pre-cleaning critical for plating adhesion