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Mil-DTL-5541 Chem Film in yellow trivalent

Q. I want to use MIL-DTL-5541 [⇦ this spec on DLA] class 3, color: gold. Is it possible to get the gold color calling out type I (no hexavalent)?

Jeff Cole
- Butler, Pennsylvania
April 10, 2012

A. Hi Jeff.

To my knowledge the only Mil-DTL-5541 approved trivalent coating is the Navair-developed TCP system, which is essentially colorless and cannot be dyed, or otherwise made to look like it's toxic hexavalent chromium. The situation may have changed, but not that I know of.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
April 10, 2012

A. Henkel has Alodine T 5900 and 871 products which they claim to conform to DTL-5541. No idea about color, though.

Isaac Lin
- El Dorado Hills, California
November 11, 2013

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