MIL-PRF-62218 Corrosion Preventive Compounds, Cold Application \(For New And Fielded Motor Vehicles And Trailers\) \(S/S By A-A-59295\)This specification covers solvent dispersed corrosion preventive compounds, referred to herein as "compound," for spray, brush, or dip application on new and fielded motor vehicles and trailers \(see 6.1\).

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MIL-PRF-62218B

profile of the coating shall not be less 152 micrometers (�m) (6 mils) and shall vary not more than

12.7 �m (0.5 mil). The compound shall not sag at the manufacturer designated wet film thickness

(see 4.6.6).

3.4.1.2 Type II. When sprayed on a vertical surface in a single back and forth motion to

the manufacturer's designated wet film thickness, the compound shall produce a coating which is

continuous and uniform upon evaporation of the solvent. The dry film thickness over metal

profile of the coating shall be 203 � 51 �m (8 � 2 mils). The compound shall not sag at the

manufacturer's designated wet film thickness (see 4.6.6).

3.4.2 Creep.

3.4.2.1 Type I. When tested in accordance with 4.6.7, the compound shall show no

evidence of creep of 6.4 millimeters (mm) (0.25 inches (in)) or more on clean test panels.

3.4.2.2 Type II. When tested in accordance with 4.6.7, the compound shall show no

evidence of creep of 6.4 mm (0.25 in) or more on mildly corroded test panels.

3.4.3 Copper corrosion. The compound shall not be corrosive to copper. When tested in

accordance with 4.6.8, the copper strip classification value shall not exceed lb (slight tarnish, dark

orange) as specified in ASTM D130 (see 4.6.8).

3.4.4 Fire resistance. The compound shall produce a coating which may char, but shall

not support combustion for more than 15 seconds after the flame source is removed in accordance

with ASTM D1310 (see 4.6.9).

3.4.5 Detergent resistance. The compound shall produce a coating which shall remain

intact and continuous after immersion in a detergent solution (see 4.6.10).

3.4.6 Chip resistance. The compound shall produce a coating which shall resist chipping

damage due to stones or other flying objects (see 4.6.11).

3.4.7 Solvent vapor wash resistance. The compound shall produce a coating which shall

resist the washing action of the compound's solvent vapor in enclosed areas (see 4.6.12).

3.4.8 Condition to touch. The compound shall produce a coating which shall be dry to

touch in 7 days (see 4.6.13).

3.4.9 Environmental. Unless otherwise specified herein, the environmental testing shall

conform to SAE J1959.