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topic 34933

Yellow Iridite


(2005)

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 [link by ed. to spec at TechStreet] chromate conversion coating, Edward. That mil spec may be what you are looking for.

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E. RET
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?

Dan Yariv-Weisbuch
- 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
Drew Nosti, CEF
Anodize USA - Ladson, South Carolina


(2006)

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, finishing.com
Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey



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