MIL-DTL-16232H, DETAIL SPECIFICATION: PHOSPHATE COATING, HEAVY, MANGANESE OR ZINC BASE (15-SEP-2020)

MIL-DTL-16232H, DETAIL SPECIFICATION: PHOSPHATE COATING, HEAVY, MANGANESE OR ZINC BASE (15-SEP-2020)., 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). For all types and classes, unless contraindicated on drawings or contract, materials containing hexavalent chromium should not be permitted on coated end items.