Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Chromate in Chemical Conversions on Aluminum

I am looking for a MIL and/or industry spec that covers the chromate (specifically clear and yellow) in chemical conversion coatings on aluminum. Initially I thought it was covered in MIL-C-5541E, but on reading it I did not see a referance to any chromate. Am I missing something?

John Barrows
- Alphretta, Georgia
1999

The MIL-C-5541 part is correct; but...

for the required properties of the chemicals to accomplish it, see MIL-C-81706
for a list of qualified commercial products see QPL-81706.

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

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