Corrosion from Reclaimed Water
Q. Can you please tell me if powder coated aluminum can hold up to reclaimed water? We use reclaimed water here in Florida for lawn irrigation and I need to know if this will hold up for mailbox post application. K.W.
A. Yes, it can hold up but there are some important qualifications. You will need a good aluminum conversion coating to create a surface that is conducive to good bonding of the coating. You will need an epoxy primer coat to provide good chemical resistance and provide good edge coverage. You will need a chemically resistant topcoat that has good UV protection. The combination of primer and topcoat should be between 3 and 6 mils. If you do it correctly it will hold up very well.
Metal fabricators that laser-cut with oxygen take steps to prepare parts better for powder coating.
Question: What methods are available for removing cured powder coatings, and what are the pros and cons of these methods?
This alternative to TGIC-based polyester powder coatings offers similar performance and enhanced transfer efficiencies.