Corrosion from Reclaimed Water
Can you please tell me if powder coated aluminum can hold up to 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.
RELATED CONTENT
-
Developments and Trends in Powder Coating
New solutions for powder coating centers combine powder preparation, conveyance, dosing and color changes into a fully automated, closed system.
-
Coating Systems with the Best Long-Term Performance
The best protection against corrosion and UV exposure, says Axalta’s Mike Withers, is electrocoat and a super durable powder coating.
-
Improving Transfer Efficiencies in Coating Operations
There are many methods for addressing electrostatic grounding in metal painting processes, and Tim Ulshafer from Mueller Electric says the best method for your process is a simple and worthwhile exercise.