MIL-PRF-81904C(AS)
4.4.3.2 Examination of container labeling, markings and packing. An
examination shall be made to determine that the labeling, packing and markings comply
with the requirements of 3.9 and 3.10 through 3.10.2. Samples shall be selected in
accordance with 4.4.2.
4.4.3.2.1 Examination for container fill. The sample size shall be as specified in
4.4.2.1, with the exception that the sample size derived from ANSI/ASQ Z1.4 shall be
rounded off to the next highest increment of five. At no time shall the sample size be less
than five. If the lot consists of less than five containers, all containers shall be used to
examine fill.
4.4.3.2.2 Examination of product. Conformance of the coating compound to the
requirements for workmanship and any other requirements not covered by specific tests
shall be determined by appropriate visual examination.
4.5 Test conditions. The laboratory testing conditions shall be in accordance with
the specific test method and as described herein.
4.5.1 Test panels. This specification requires the use of two different sizes of test
panels.
4.5.1.1 Small test panels. Small test panels shall be cold-rolled steel, conforming
to QQ-S-698. Test panel dimensions shall be 6.0 by 3.0 by 0.031 inch (150 mm by 76
mm by 0.8 mm). Panels shall be thoroughly cleaned and lightly sanded prior to coating
application. The coating compound, using appropriate spray equipment, shall be sprayed
to a thickness of 0.155 ±0.020 inch. (4 ±0.5 mm) on the prepared surface of the test
panel. The actual applied coating compound thickness shall be measured (accuracy of
0.001 inch (0.025 mm)) and recorded prior to testing. Care shall be exercised to ensure a
uniform coating, free from entrapped air bubbles or other film defects. The coated panels
shall then be cured for a minimum of sixty minutes at room temperature.
4.5.1.2 Large test panels. Large test panels shall be prepared from low carbon
steel, type 1006-1020. Prepare panels, with dimensions of 6 by 6 by 0.5 inch (152.4 mm
by 152.4 mm by 12.7 mm). The test panels shall be grit blasted prior to coating
application, to an approximate 2-3 mil surface profile. The coating compound shall be
spray-applied to the test panels to a uniform film thickness of 0.155 ±0.020 inch (4 ±0.5
mm). The actual applied coating compound thickness shall be measured (accuracy of
0.001 inch (0.025 mm)) and recorded prior to testing. Care shall be exercised to ensure a
uniform coating, free from entrapped air bubbles or other film defects. The coated panels
shall then be cured for a minimum of sixty minutes at room temperature.
4.6 Test methods.
4.6.1 Tests. The tests contained in this specification shall be conducted in
accordance with the applicable test method document or as specified herein.
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