MIL-DTL-85054D(AS)
reweighed and the net difference determined. The net weight of the compound shall be
computed by multiplying the net difference by the fraction of the contents which has been
identified in 6.3.2 as compound.
4.6.6.3 Performance of self-pressurized containers. Panels as specified in 4.4.1 shall be
used. A panel shall be supported such that the longer dimension forms a 45 degree angle with
the horizontal. A self-pressurized container shall be sprayed on the panel from a distance of 12
inches (30.5 mm). The panel shall be examined for uniformity, volume and pattern of spray,
foaming, and adherence to the substrate. After a 10-second pause, the same panel shall be
resprayed and examined for adhesion and sag. After a five-second pause, the same panel shall be
resprayed and re-examined.
4.6.7 Coating transparency and discernability. Prime and paint two 2 inch by 6 inch
aluminum panels using coatings in accordance with MIL-PRF-85582 and MIL-PRF-85285 (gloss
white color). Mark both panels by applying two dots approximately 0.2 inch diameter, 0.5 inch
apart, at the approximate center of each panel, using gray gloss enamel. Immerse one of each type
of panel specimen in the material to be tested so that the lower two thirds of each panel is
submerged. Remove and allow to dry in accordance with 4.6.1. After 24 hours inspect each panel
with the unaided eye and determine whether the markings (simulated corrosion spots) are visible
through the coating. Determine if the demarcation line between the coated and uncoated portion
of the panels is clearly visible.
4.6.8 Coating removability. Using the coated test panel from 4.6.7, attempt to remove the
compound by wiping the coated surface using light hand pressure with a CCC-C-46 Class 7
wiping cloth dampened with 10 milliliters of solvent in accordance with MIL-PRF-680, type II.
In daylight, from 6 feet away, there shall be no visual evidence of residue.
4.6.9 Drying time. Three test disks prepared as specified in 4.4.1 and 4.4.2 shall be coated as
specified in 4.4.3 using compound conditioned as in 4.6.2.1 and allowed to hang in a vertical
position for three hours. The compound shall be dry for handling in two hours and completely
dry to the touch after 24 hours.
4.6.10 Low temperature adhesion. Coat one test panel and allow to dry. The specimen shall
then be cooled to the requisite test temperature (30 ± 5 °F) and maintained at this temperature
for 1 hour minimum. While the specimens are at this temperature, four parallel scratches
approximately 0.125 inch apart and 1 inch long shall be made on the film. Four similar scratches
shall then be made perpendicular to the first four. Unsatisfactory adhesion is characterized by
flaking of the film within the areas bounded by the scratches. Chipping of the film (coating)
extending more than 0.05 inch from either side of the scratch marks shall be considered flaking.
4.6.11 High temperature adhesion. Three test panels 4 by 6 by 0.040 inch shall be cleaned.
Mask a one inch strip along one of the long edges of the panel on one side only. Coat the panels
and allow to dry for 72 hours. Draw or scratch a straight line parallel to the film edge and 1/8
inch away from it. Suspend vertically with the bare surface down, for not less than 2 hours in a
13
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business