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topic 17580

Brush applied Chromate Conversion Coatings


Is it possible to achieve a conversion coating by brush or swab (for small areas) to match Mil-C-5541 [link is to free spec at Defense Logistics Agency,] class 3 or similar to - def-stan 03-18. If so how and who manufactures the materials?

Brian A H Barton
- England


Ref the Alocrom (Alodine in The United States) range of products (Henkel) there are products available i.e., Brush Alocrom.

Rich Mosley
- UK


We are using chemical named CHROMAL that can be used in 3 ways of dipping, swabbing , brushing & spraying. Fulfills MIL standard (3 classes). The coating can be adjusted from clear up to dark ,according to alloy being processed.

Hadi Khosravi
- Tehran, Iran


Iridite 14-2 brush on kits are available from Macdermid or its distributors

don baudrand
Don Baudrand
Consultant - Poulsbo, Washington
(Don is co-author of the book "Plating on Plastics")


Just put on rubber Protective Gloves [affiliate link to product info on Amazon], use a Cotton Swab, or an old cloth, swab on some of the deox solution from the deox tank, then rinse, then using 4 times concentration of whatever chromate you have, swab it on until the yellow color does not wipe off, let cure 24 hours, ship.

robert probert

Robert H Probert
Robert H Probert Technical Services
supporting advertiser
Garner, North Carolina


We carry out this process on a large number of parts, the solution we use is alocrom 1200 made up to double strength, pre-clean the parts brush on until the correct shade is achieved and rinse off, depending on the size of parts you can air dry or blow dry.

John Camfield
- UK


We need sample and data sheet of ELPO chemicals in auto.

Dr-Kamal Mikhael Rizk
- Cairo, Egypt


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