The ABPHOS 900M phosphate process produces, by immersion, manganese/iron coatings on steel surfaces. The process develops a fine, uniform, heavy crystalline coating which is non-metallic and highly absorptive. ABPHOS 900M coatings conform to the requirements of BS 3189 -1973 Type 1A and DEF. STAN 03-11/2 Class I. In conjunction with suitable lubricants, ABPHOS 900M provides excellent sliding surface protection - to reduce friction and wear on moving parts. i.e. piston rings, valves, gears and other bearing surfaces.

An acidic, liquid chemical which when diluted in near-boiling water gives a heavy manganese-iron phosphate coating on iron and steel. Used by dip, it is an accelerated process giving a coating with very high corrosion resistance and also lubricant retention for components subject to wear. It is approved to DEF STAN 03-11/3 as a Class I accelerated process and previously to DTD 900/4391; it also conforms to BS 3189 (1973) type IA heavyweight. It also meets B.Ae Airbus ABP 1-5056.