Letter 4071

MATERIALS THAT CAN BE ANODIZED 

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WHAT MATERIALS BESIDES ALUMINUM CAN BE ANODIZED?

DOUG HORN - PARKER E.S.D. - SMITHTOWN,N.Y.

Magnesium, stainless steel, titanium, and zinc are four that I can think of offhand. Note, though, we're speaking of the ability of a material to form a useful oxide skin when anodically oxidized under the right conditions--we're not talking about materials that you can just drop into a tank designed for anodizing of aluminum. Regards,

Ted Mooney, P.E.  finishing.com Brick, NJ

How can I anodise magnesium alloys? Are there any approved international processes? Are they all aerospace approved?

Peter Bennett
- Birmingham, England

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