MIL-PRF-46010H
4.4.2.1 Preparation of and application to test panels for solid film lubricant (aluminum
and corrosion resistant steel). The panels shall be made from:
a. aluminum alloy conforming to ASTM B209/5, anodized to conform to
MIL-A-8625, type II sulfuric acid anodize, measuring approximately 0.05 cm
by 7.6 cm by 15.2 cm (the thickness of the anodize should be between .005
and .013mm); and
b. corrosion resistant steel conforming to ASTM A167, and measuring
approximately 0.09 cm by 7.6 cm by 15.2 cm.
The panels shall be pre-cleaned with aliphatic naphtha or any environmentally safe cleaner that
sufficiently cleans surfaces to pass ASTM F22. This cleaner shall not cause damage to the
surface being cleaned. The corrosion resistant steel panels shall have both faces and all edges
grit-blasted with 180 - 220 grit aluminum oxide. Application of the lubricant shall be performed
in a well-ventilated area or hood where no flame or ignition source is present. Only one side of
each panel shall be fully coated, except for two of the anodized aluminum panels which shall
have the lubricant applied to a 2.54 cm wide strip to enable measurement of the film thickness.
A spray application technique shall be used to coat the panels for the tests specified herein. The
solid film lubricant thickness alone (thickness tester zeroed to the blast profile or anodized
surface), when performed in accordance with 4.5 after cure, shall be 0.005 to 0.013 mm. The
desired film thickness shall be achieved with not greater than 3 coats. Air drying at 25 ± 3°C
for ten minutes between coats is allowed. After the final coat has been applied, the coated
specimens shall be allowed to air dry for not less than 60 minutes (A flash cure at 65°C - 79°C
for 10 to 30 minutes until dry to touch is also permitted). The coated specimens shall then be
placed in an air circulating oven at 150 ± 15°C for 2 hours. The coated specimens shall be
removed from the oven and allowed to cool to room temperature. At least two test panel
specimens shall be used in each test method. A total of 28 aluminum panels and 2 corrosion
resistant steel panels are required for testing in accordance with performance requirements of this
specification.
4.4.2.2 Preparation of and application to test panels for solid film lubricant (steel). The
panels shall be steel panels approximately 0.32 cm by 7.6 cm by 15.2 cm conforming to ASTM
A108. The panels shall be pre-cleaned with aliphatic naphtha or any environmentally safe
cleaner that sufficiently cleans surfaces to pass ASTM F22. The cleaner shall not cause any
damage to the surface being cleaned. The panels shall have both faces and all edges grit-blasted
with 180-220 grit aluminum oxide. Phosphate the panels (weight should be 11 - 22 g/m2) in
accordance with MIL-DTL-16232, using ASTM B499 or D7091 to measure the thickness of the
phosphated panels. The steel panels shall be dipped or sprayed to the same thickness as specified
for the aluminum panels (see 4.4.2.1). After air drying for 60 minutes (a flash cure at 65°C to
79°C for 10 to 30 minutes until dry to touch is also permitted), bake the panels in an air
circulating oven at 204 ± 15°C for one hour. The coated specimens shall be removed from the
oven and allowed to cool to room temperature. At least two test panel specimens shall be used in
each test method. A total of two steel panels, two steel disks and six sets of pins and vee blocks
are required for testing in accordance with performance requirements of this specification.
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