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Can Chrome Plated Aluminum Survive Chromate Conversion Coating

Q. Hello,
I have some aluminum parts (7050-T7451) that need chrome plating but the holes and countersinks are to be Alodined and primed only. What is the best way to go about this. Can I Alodine chrome plating without damaging it?

Micheline Forth
- Rincon, Georgia USA
January 11, 2016

A. Hi Micheline. I don't have specific experience with that, but chrome plating can endure phosphatizing of the bare areas, and I'm not seeing any reason to suspect that Alodining would be an issue as long as aggressive cleaning isn't required.

Regards,

Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
January 2016

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