01How electrophoretic coating works
After anodizing (and coloring, if required), profiles are immersed in a water-based acrylic bath. An electric current drives the paint particles onto every exposed surface until the film insulates itself — which is why thickness stays remarkably even. The film is then cured in an oven.
02Why specify e-coat
- Very uniform film, including inside corners and recesses
- Smooth, fine appearance with matte or gloss options
- Extra protection for anodized colors against mortar, cleaners and pollution
- Thin film that preserves the metallic look of anodizing
03E-coat, anodizing or powder?
| Finish | Film | Look | Best for |
|---|---|---|---|
| Anodizing | 5–25 µm oxide | Metallic | Hard-wearing metallic finishes |
| Anodizing + e-coat | Oxide + thin acrylic | Metallic, smooth, matte or gloss | Windows, doors, interiors, premium trims |
| Powder coating | 60–120 µm polymer | Any color | Color-driven facades and products |
04Frequently asked questions
What is electrophoretic coating on aluminum?
It is a thin acrylic lacquer applied electrically over an anodized profile and then cured, creating a smooth composite finish that protects the anodic layer.
Is e-coat the same as powder coating?
No. E-coat is a thin, liquid-applied film deposited electrically over anodizing; powder coating is a much thicker dry-powder film applied electrostatically directly over pretreated metal.
Last updated September 17, 2026 · Reviewed by the CharMax Aluminum engineering team