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Iridite 5025

Iridite 5025 / Additive Cr is a two component liquid product that is used to produce a
chromate/oxide coating on the hexavelant chromium surface of aluminum and its alloys which improves the adhesion of applied paint and powder finishes. In addition the special chromate coating provides good corrosion resistance to unpainted aluminum and, underneath paint, it prevents chemical reactions between the metal and the coating which can sometimes cause blistering of the finish.

Iridite 5025 is generally applied by immersion technique. Prior to chromate conversion a specific cleaning and deoxidation treatment is required so as to ensure a better coating uniformity.