HOME FAQs BOOKS JOBS: Help Wanted Suggestions you are here: Hotline/Forum => Letter 3032

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-5541 [link is to spec at TechStreet]E, but on reading it I did not see a referance to any chromate. Am I missing something?

John Barrows
- Alphretta, Georgia

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.
finishing.com
Brick, New Jersey

ANSWER or FOLLOW UP POST an unrelated QUESTION HOT Topics

Disclaimer: It is not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information
presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The
internet is largely anonymous; some names may be fictitious and some recommendations may be deliberately harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: