Phosphating

The chemical processes involved in the Phosphating process are quite complex but in brief terms the phosphating process converts the surface layer of certain metals into strong, adherent, insoluble metal phosphates. These can either be crystalline or amorphous in structure. Phosphating forms both a rust resisting layer in itself and also gives an excellent key to a subsequent paint coating. If scratched, the underlying metal surface does not corrode as rapidly as it would without the phosphate layer.