DOD-P-16232F, MILITARY SPECIFICATION: PHOSPHATE COATINGS, HEAVY, MANGANESE OR ZINC BASE (FOR FERROUS METALS) (07 NOV 1978) [SUPERSEDES MIL-P-16232E] [S/S BY MIL-DTL-16232G]

DOD-P-16232F, MILITARY SPECIFICATION: PHOSPHATE COATINGS, HEAVY, MANGANESE OR ZINC BASE (FOR FERROUS METALS) (07 NOV 1978) [SUPERSEDES MIL-P-16232E] [S/S BY MIL-DTL-16232G]., This specification covers two types of heavy phosphate coating for ferrous metals, applied by immersion. The coatings consist of a manganese phosphate or zinc phosphate base and, when specified, a supplementary treatment (see 6.1).