MIL-PRF-81309G
TABLE I. Performance characteristics.
Property
Requirement
Type
Type
Type
Type
Type
Type
I,
I,
II,
II,
III,
III,
Class
Class
Class
Class
Class
Class
1
2
1
2
1
2
Acid salt fog
2 (carbon steel)
X
X
X
X
protection, minimum
8 (410 stainless
X
X
cycles to
steel)
unacceptable
corrosion 1/
Application
Brush, Dip, or
X
X
X
Spray
Sprayable after 20
X
X
X
hours at 40 °F
Compatibility with
No cracking or
X
X
X
X
X
X
polyimide, wiring
degradation of
insulation
insulation following
prolonged
exposure; No
dielectric leakage
Dielectric strength
25,000 volts
X
X
X
X
X
X
minimum
Effect on acrylic
No crazing,
X
X
X
X
X
X
plastic and
cracking, or
polycarbonate
staining
Effect on urethane
No crazing,
X
X
X
X
X
X
paint
cracking, or
staining
Effect on electronic
components,
X
X
maximum change
5 milliohms
from initial contact
resistance
7
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