Aluminum Coatings & Surface Treatments
CNCALPARTS machines aluminum and only aluminum — and finishing is part of that focus. Explore our guides to anodizing, powder coating, chromate conversion, chemical film, Alodine, and electroless nickel plating, all prepared with aluminum-specific process control in mind.
- Material Focus
- Aluminum Only
- Tolerance
- Down to ±0.01 mm
- Finishing
- Integrated In-House
Why treatment choice matters
Aluminum reacts differently from steel or titanium. Coating and conversion processes must be matched to alloy, wall thickness, cosmetic requirements, and dimensional tolerance.
- Anodizing and hard anodizing for wear and appearance
- Chromate conversion and chemical film for conductivity and corrosion resistance
- Powder coating and plating for durable protective finishes
Finishing built around one material
Because CNCALPARTS works exclusively with aluminum alloys such as 6061, 7075, 6082, 2024, 5052, and 5083, our coating and treatment guidance is written for the realities of aluminum parts — thin walls, cosmetic surfaces, tight bores, and anodizing growth.
Each guide below explains what the process does, where it is used, and how to specify it correctly on your drawing so the finished part meets both function and appearance requirements.
Corrosion Protection
Conversion coatings and anodizing layers that protect aluminum in demanding environments.
Cosmetic Control
Bead blasting, brushing, polishing, and color anodizing for visible aluminum parts.
Wear Resistance
Hard anodizing and plating options for sliding, mating, and high-contact surfaces.
Dimensional Awareness
Treatment thickness accounted for so critical tolerances stay within specification.
Coating & treatment guides
Practical articles on aluminum surface finishing, written by a machine shop that machines aluminum every day. Use them to specify treatments confidently on your next project.
From bare machined surface to finished part
CNCALPARTS supports prototypes, low-volume runs, and repeat production. We review drawings, tolerances, critical dimensions, and surface requirements before machining, then inspect with CMMs, micrometers, thread gauges, and surface roughness testers.
- 1 Drawing review — we flag treatment notes, masking needs, and tolerance-critical features early.
- 2 Machining — 3, 4, and 5-axis milling, turning, and turn-mill work optimized for aluminum.
- 3 Finishing — as machined, bead blasting, brushing, polishing, anodizing, powder coating, chemical film, and more.
- 4 Inspection — dimensional inspection reports and first article reports available on request.
±0.01 mm
Precision tolerance capability
Ra 0.8–3.2 μm
Surface roughness range
1–10 pcs
Prototype quantities
500+ pcs
Production quantities
We machine aluminum. Only aluminum.
Send your 3D model and technical drawing to discuss your next aluminum machining and finishing project with CNCALPARTS. We will confirm the right treatment for your alloy, tolerances, and application.
Start your aluminum project
Share your drawings, alloy, quantities, and required surface treatment. Our team will review the details and respond with a clear quotation.
- info@cncalparts.com
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