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

finishing.com -- The Home Page of the Finishing Industry

The authoritative public forum
for Metal Finishing since 1989
-----

Gold Chemical Film - RoHS Compliant?

We use gold chemical film per MIL-C-5541, class 3 on all of our aluminum parts used outdoors. I've been told this finish is not RoHS compliant? If not, would "clear" be a good substitute?

Craig Solis
communications - Santa Clara, California, USA
2007

Clear chromate can be RoHS compliant but is not necessarily so. Mil-C-5541 was recently revised to allow TCP conversion coating in lieu of hexavalent chromate conversion coating. And there are other aluminum treatments that are RoHS compliant if you do not need Mil-C-5541 rating. The TCP coatings cannot be dyed, so gold colored RoHS-compliant, Mil-C-5541-compliant is not possible.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2007

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully 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 & unvetted; some names may be fictitious and some recommendations might be harmful.

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