Curated with aloha by
Ted Mooney, P.E. RET
The authoritative public forum
for Metal Finishing 1989-2025
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Yellow Iridite
Looking for specification for yellow Iridite on aluminum.
Edward J. Leszczak- Atlantic Highlands, New Jersey
2005
Iridite (with a single 'r') is a Macdermid trade name for (among other things) a qualified product for MIL-C-5541 chromate conversion coating, Edward. That mil spec may be what you are looking for.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2005
How do we look into the RoHS Directive regarding the elimination of the hexavalent chromium linked to the 5541 ?
of course in civilian/computer/telecom equivalent for passivation on aluminium and iron plates?
- Oranit, Israel
2005
Until recently trivalent chromates generally had little success replacing Hex chrome materials that meet MIL-C-5541 requirements. There is now a group of products that compare favorably with the hex chem films. These should shortly be on the QPL list and meets or exceeds the requirements of MIL-C-5541.
Drew Nosti, CEF
Anodize USA
Ladson, South Carolina
2005
Updating the situation for 2006, Dan, the Navy has licensed four suppliers to offer the TCP process for hex-free chromate conversion coating: Henkel, Luster-On, Metalast and Surtec.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2006
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