MIL-PRF-81352C
TABLE I. Specular gloss.
Minimum
Maximum
Gloss
80
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Semi-gloss
15
45
Camouflage
---
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3.7.3 Adhesion (wet). The coatings, applied to test panels in accordance with 4.5 through
4.5.2, and then immersed in distilled water for 24 hours, shall not peel away from the test panel
when tested in accordance with FED-STD-141, Method 6301.3 (see 4.6).
3.7.4 Opacity. The coatings, cast to a dry film thickness of 1.7 to 2.3 mils (43 to 58 µm) on
a black and white chart and tested in accordance with ASTM-D2805 (see 4.6), shall have a
contrast ratio of not less than 0.95 for all colors, with the exception of FED-STD-595, color
13538, which shall have a contrast ratio of not less than 0.90.
3.7.5 Flexibility. The coatings, applied to test panels in accordance with 4.5 through 4.5.2,
shall exhibit no cracking, peeling, or loss of adhesion, when bent over a 1.0 in. (25.4 mm)
mandrel, in accordance with ASTM-D522, method B (see 4.6).
3.8 Resistance properties.
3.8.1 Fluid resistance. The coatings, applied to test panels in accordance with 4.5 through
4.5.2, and tested in accordance with 4.6.4, shall exhibit no blistering, softening, or other coating
defects four hours after removal from the fluids. A slight staining of the coatings is acceptable.
3.8.2 Weather resistance. The coatings shall have a color difference value (ĆE) of not
greater than 2.0, as compared to the unexposed coatings, when tested in accordance with 4.6.5.
3.8.3 Heat resistance. The color change of the coatings (ĆE) shall be not greater than 1.0 as
compared to the unexposed control coating, when tested in accordance with 4.6.6.
3.8.4 Water resistance. The coatings shall exhibit no cracking, blistering, or whitening
when tested in accordance with 4.6.7. A slight whitening or dulling, which is removed by lightly
wiping with a soft cloth, shall not be cause for rejection.
3.9 Marking and labeling. All containers that serve as shipping containers shall be marked
in accordance with ANSI-Z129.1. Individual containers shall bear permanent labels showing the
following:
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