MIL-PRF-81904C(AS)
hardness of 50. Pull-off adhesion strength shall not be reduced by more than 30 percent.
Thermal efficiency shall not be reduced by more than 30 percent.
3.7.7 Weather resistance. After exposure in Xenon-arc weatherometer for 500
hours as specified in 4.6.9, the coating compound shall exhibit no evidence of cracking or
loss of adhesion after exposure as specified in 4.6.9. The coatings shall have a color
difference value (ΔE) of not greater than 12.0, as compared to the unexposed coating.
Upon completion of the test, the coating shall have a minimum Shore D hardness of 50.
Pull-off adhesion strength shall not be reduced by more than 30 percent. Thermal
efficiency shall not be reduced by more than 30 percent.
3.8 Environmental performance requirements.
3.8.1 Temperature and humidity cycling. The coating compound shall exhibit no
loss of adhesion nor any excessive cracking or blistering, when applied to one inert
loaded MK 82, 500 pound bomb in accordance with Naval Air Systems Command
Drawing Number 4902393, and when tested in accordance with 4.6.10.
3.8.2 Fast cook-off. One MK-82 bomb test shall be not less than 8 minutes to
reaction when tested in accordance with 4.6.11.
3.9 Labeling. Individual cans and containers shall bear printed labels containing
the following:
a. Specification MIL-PRF-81904C(AS).
b. Component A- Pigmented Resin, or Component B - Catalyst (as
applicable).
c. Color (name and number).
d. Manufacturer's name and product number.
e. Date of manufacture (month and year).
f. Lot and batch number.
g. Flash point.
h. Net contents.
3.10 Container markings and packing. The container shall be as specified in the
contract or order (see 6.2) and shall close by the method specified in the contract or order
(see 6.2). The container shall not be distorted or bulging and there shall be no leakage or
seepage of the container contents. Directions for use shall be included. All markings and
directions shall be clear, legible, correct, and complete. All components shall conform to
the requirements of this specification. The components shall not be missing, damaged, or
defective.
3.10.1 Component A (resin) containers. All containers of toxic and hazardous
chemicals and materials shall be labeled in accordance with the applicable federal, state,
and municipal laws, statutes, regulations, and ordinances. In addition to the labeling
specified in 49 CFR 171-178, the following labeling shall appear on each container and
on each exterior shipping container:
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