Gives a method of specifying requirements for phosphate conversion coatings, primarily for application to ferrous metals, aluminium, zinc, cadmium and their alloys. Includes information to be supplied by the purchaser to the coater, guidance information, recommendations for phosphate conversion coatings to provide corrosion protection, to ensure good adhesion of paints, varnishes and related coatings and to improve corrosion resistance, to facilitate cold forming, to facilitate sliding action, guidance on heat treatment of steel, appearance of types of phosphate conversion coatings, determination of corrosion resistance, and identification of phosphate conversion coatings.

BS 3189(1973) : 1973

BS PD539(1946) : LATEST

BS EN 12476 : 2000

ISO 9717 : 2017 - Identical