Phosphating, also known as conversion coating, is a method of treating metal parts for durability and corrosion resistance as a foundation for future coating or painting. A diluted solution chemically reacts with a metal’s surface to form a layer of insoluble, crystalline phosphates. The phosphating procedure includes: cleaning the surface, rinsing, surface activation, phosphating, rinsing, neutralizing rinse (optional), drying and an application of supplemental coatings, such as lubricants, sealers and oils.