Surface Finishing for Aluminum 7075-T6
7075 aluminum anodizes differently than 6061 — it tends toward yellow/brown hues and does not color as vibrantly. Chromate conversion and hardcoat are more common finishes.
Recommended Machining Parameters
| Parameter | Value |
|---|---|
| Achievable Tolerances | ±0.02 mm (±0.0008") |
| Surface Finish | Ra 0.4-3.2 μm |
| Cutting Speed | N/A |
| Feed Rate | N/A |
| Tooling Recommendations | N/A — surface finishing process |
Expert Machining Tips
1
Expect darker/yellower anodize than 6061
2
Hardcoat (Type III) works well
3
Chromate conversion preferred for aerospace
4
Clear anodize may have a slight yellow tint
Common Parts Made
Chromated aerospace parts
Hardcoated wear surfaces
Clear anodized defense components
Machining Challenges
- Anodize color less vibrant than 6061
- Zinc content affects color consistency
- Not ideal for colored decorative anodize