Color Anodized CNC Machined Aluminum Parts
These are CNC milled and turned aluminum parts finished with Type II color anodizing, in black, red, blue, gold, green, purple and custom shades. Typical parts are covers, knobs, brackets, spacers and housings made from 6061-T6, 6063 or 7075-T6. The service suits brands that want colored metal parts with a durable finish, from prototypes to production batches.
- Material
- Aluminum
- Tolerance
- to ±0.005 mm
- MOQ
- 1 piece
- Prototype lead time
- 3–7 days
- Type II anodizing in standard and custom colors
- Rack contact marks placed on hidden faces
- Coating thickness checked by eddy-current gauge
- Fits rechecked after anodize growth
Item ref. 1601430024850 ·
| Process | CNC milling, CNC turning, Type II anodizing |
|---|---|
| Materials | Aluminum 6061-T6, 6063, 7075-T6 |
| Tolerance | ±0.05 mm standard; down to ±0.005 mm on critical features |
| Surface Finish | Type II color anodizing, sandblasting, brushing, laser engraving |
| Anodize Thickness | Typically 5–25 µm (Type II) |
| MOQ | 1 piece; prototypes through mid-volume |
| Drawing Formats | STEP, IGES, X_T, STL, DWG, DXF, PDF |
| Lead Time | Prototypes typically 3–7 working days; production 10–20 |
| Inspection | First-article, in-process and CMM checks; reports on request |
Manufacturing
How we make this part
Process, material options and inspection for color anodized cnc machined aluminum parts.
Anodizing grows an oxide layer from the aluminum surface itself, which is then dyed and sealed. Before anodizing, parts are machined, deburred and often blasted or brushed to set the texture, because the anodize follows the surface beneath it. Parts are racked on contact points that leave small bare marks; we place these on hidden faces agreed with you.
Alloy choice affects color: 6063 and 6061 give bright, even colors, while 7075 can look slightly darker or uneven, and cast aluminum is generally not suitable for cosmetic anodizing. Type II layers of about 5–25 µm offer good corrosion resistance. Darker colors such as black and deep blue are the most fade-resistant outdoors; light reds and purples fade faster under UV.
Color is checked against an approved sample, and coating thickness can be measured with an eddy-current gauge. Threads and fits are rechecked after anodizing because of coating growth. Each part is inspected for streaks, spots and rack marks. Typical products include consumer electronics covers, bicycle and motorcycle accessories, RC model parts, audio knobs and lighting housings.
FAQ
Frequently asked questions
Which anodize colors last longest outdoors?
Black and dark colors such as deep blue or bronze generally resist UV fading best. Bright reds, pinks and purples tend to fade faster in direct sunlight. For outdoor parts, a well-sealed, thicker anodize layer improves durability, and we can suggest suitable dyes.
Why do some parts show small marks after anodizing?
Each part must be held on a rack with electrical contact during anodizing, which leaves small uncoated spots. We place contacts on hidden faces, holes or areas you approve. If no mark is acceptable anywhere, we can discuss special racking or post-anodize touch-up options.
How do I get a quote for color anodized cnc machined aluminum parts?
Send a 3D model (STEP or IGES) and a 2D drawing with tolerances, material, finish and quantity through the quote form or by email. An engineer replies within 24 hours on business days with price, lead time and any DFM suggestions.
Request a quote
Quote this part
Attach drawings or send several parts at once from the full quote form.
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