Video tutorialBeginner
Anodizing Process Explained
Type II vs Type III anodize, coloring, and dimensional growth for aluminum parts.
Finishing Team2024-11-0810 min read5,4324.8
Summary
Anodizing converts aluminum surface to aluminum oxide for corrosion and wear resistance. Account for ~50% growth into the dimension.
1Type II decorative
5–25 µm films, dye colors, general corrosion protection.
2Type III hardcoat
25–75 µm, wear resistance, limited dye options.
3Dimensional growth
Roughly half the film thickness grows outward — specify fits after anodize.
Key points
- Reserve growth on precision fits
- Hard anodize for wear
- Seal per spec for corrosion
AnodizingSurface finishVideo
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