Phosphated cold rolled sheets are usually given a chromic acid sealing to improve their corrosion resistance. Why the reverse can't be done? Can chromated sheets be powder coated without phosphating?
there are several other materials that can be used in preference to Phosphate 1) Epoxy primer or Zinc Rich Epoxy Primer. 2) Waterborne non-toxic primers. 3) Etch primer (wash primer) but the industry is trying to eliminate this type of product due to the Chromate content