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|  MIL-C-83409(USAF)
2.2 Other publications. The following documents form a part of this
specification to the extent specified herein. Unless otherwise
indicated, the issue in effect on date of invitation for bids or request
for proposal shall apply.
AMERICAN SOCIETY FOR TESTING MATERIALS (ASTM)
G 23
Weathering of Plastics
(Copies of ASTM publications may be obtained from the American Society
for Testing and Materials, 1916 race Street, Philadelphia, Pennsylvania
19103.)
3. REQUIREMENTS
3.1 Preproduction sample. The preproduction sample requirements
shall be as specified in MIL-V-43511.
3.2 Design and dimensions. The design and dimensions of the coated
visor shall be as specified in MIL-V-43511.
3.3 Materials and components
3.3.1 Plastic and spring. Plastic and spring requirements shall be
as specified in MIL-V-43511.
3.3.2 Abrasion resistant coating. The coating shall be a clear
product which meets the abrasion resistance, adhesion, and environmental
resistance requirements specified herein.
3.4 Areas of vision. The areas of vision shall be as specified in
MIL-V-43511.
3.5 Performance. The coated visor shall meet the requirements as
specified in MIL-V-43511.
3.6 Abrasion resistant coating durability
3.6.1 Abrasion resistance. After being subjected to the abrasion tests
in accordance with Section 4, the increase in haze shall not exceed
3 percent and the decrease in transmittance shall not exceed 4 percent.
3.6.2 Coating adhesion
3.6.2.1 Before and after environmental exposure the coating shall
show no loss in adhesion when tested in accordance with Section 4.
2
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