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topic 12263

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
- Stockbridge, Georgia


November 2007

Hi, J. The operation you are trying to perform is Mil-DTL-5541 [link is to free spec at Defense Logistics Agency, dla.mil] 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, finishing.com Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey



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