MIL-PRF-62218B
3.4.9.1 Low temperature stability. The compound shall remain homogeneous after
exposure to various temperatures as specified in 4.6.14.1.
3.4.9.2 Low temperature sprayability. The compound shall be sprayable at temperatures
down to 4°C (40°F). The compound shall be considered sprayable at 4°C (40°F) if the film on the
sprayed glass panel is continuous and uniform (see 4.6.14.2).
3.4.9.3 Low temperature flexibility. The compound shall produce a coating which shall
be flexible at temperatures down to -29°C (-20°F) (see 4.6.14.3).
3.4.9.4 High temperature sprayability. The compound shall be sprayable at temperatures
up to 38°C (100°F) (see 4.6.14.4).
3.4.9.5 High temperature flow resistance. The compound, after curing, shall produce a
coating which shall not sag when exposed to temperatures up to 149°C (300°F) for 2 hours
(see 4.6.14.5).
3.4.9.6 Salt fog.
3.4.9.6.1 Type I. When applied to a clean surface, the compound shall produce a coating
which shall inhibit corrosion and other surface failures when exposed to a 1000 hours salt fog
atmosphere in accordance with SAE J1959.
3.4.9.6.2 Type II. When applied to a test surface corroded by exposure to 120 hours of
ASTM B117 salt fog, the compound shall produce a coating which shall inhibit corrosion and
other failures when exposed to 1000 hours salt fog atmosphere in accordance with SAE J1959,
except that the rating number shall be not less than 2.
3.4.9.7 Salt water immersion. The compound shall produce a coating which shall inhibit
corrosion to a rating not less than 9 when immersed in salt water for 21 days (see 4.6.14.6).
3.4.9.8 Cyclic environmental conditions. The compound shall produce a coating which
shall inhibit corrosion when exposed to cyclic environmental conditions, in accordance with SAE
J1959, sections 3.9 and 3.12.
3.5 Workmanship. Workmanship shall be such quality as to assure that the compound
furnished under the specification is uniform in qualities and condition and free from foreign
materials (see 4.6.3).
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