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topic 8371

Chromic Acid Anodizing


Can dissimilar alloys be run on the same rack of parts for chromic acid anodizing? e.g. 2024-T3 and 7075-T6 parts.

Ray Handwerker
- Bensalem, Pennsylvania, USA


2000 aluminum alloy series are rich in copper and are more conductive than the other. This may cause in unbalanced distribution of electric current in the bath. Most process specs I've read do not recommend that dissimilar alloys be run at the same rack.

Dado Macapagal
- Toronto, Ontario

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