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Ted Mooney, P.E. RET

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Seeking Alodine replacement

I am rebuilding two airplane wings made of 2024-T3 alum. I am trying to find Alodine in the powder form. I was told that I could use Iridite 14-2 as a replacement. What is the difference between the chemical Alodine and Iridite 14-2. I am familiar with Alodine but not Iridite.

J. Rinehart

November 2007

Hi, J. The operation you are trying to perform is MIL-DTL-5541 [on DLA] Chromate Conversion Coating. Alodine is a Henkel trade name for a product used for this, and Iridite is a Macdermid trade name. You can also obtain chemicals for chromate conversion coating from Chemetall and others. Good luck.

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

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