Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Yellow chromate compare to Alodine for conductivity
I am trying to find a good Aluminum finish that will be conductive. I was going to yellow chromate the part but I was told that Alodine finish was better. Can you help?
Thanks,
Marc Belanger- Methuen, Massachusetts
2002
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Alodine is a trade name for one brand of chromate conversion coatings, and doesn't by itself imply either yellow chromate or clear chromate. As a general rule, the darker the chromate, the better the corrosion resistance but the lower the conductivity.  Ted Mooney, P.E. Striving to live Aloha finishing.com - Pine Beach, New Jersey 2002 Yellow chromate is a finish for aluminum. Alodine is a brand of a chemical you would buy to produce a yellow chromate. So Alodine is not better than yellow chromate, it is how you would achieve a yellow chromate. Alodine is produced by Henkel. Michael Pecjak- Mentor, Ohio 2002 |
Q. Alodine or Yellow Chromate what's the difference; is there any? Can you substitute it?
mark Paskovichjob shop owner - Garner, North Carolina
July 17, 2009
Hi Mark. Alodine is a Henkel trade name for their range of chromate conversion chemistry processes. It may include both clear & yellow chromates (and possibly other colors), trivalent & hexavalent (and possibly chrome-free), and chromates for zinc plating & aluminum (and possibly other substrates). It's just an overall brand name.
Regards,
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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