MIL-I-6869D, MILITARY SPECIFICATION: IMPREGNANTS FOR ALUMINUM ALLOY CASTINGS (14-JAN-1971) [S/S by MIL-I-17563]

MIL-I-6869D, MILITARY SPECIFICATION: IMPREGNANTS FOR ALUMINUM ALLOY CASTINGS (14-JAN-1971) [S/S by MIL-I-17563]., This specification covers impregnants suitable for use in sealing porosity of aluminum alloy and magnesium alloy castings to permit conformance to the paragraph of MIL-STD-276 titled "when castings may be impregnated", It does not cover structually sound castings containing micropores which are incorporated in fire control instruments or mortar shells (see 6.3).