MIL-PRF-46010H
3. REQUIREMENTS
3.1 Qualification. The lubricant furnished under this specification shall be products
which are qualified for listing on the applicable qualified products list at the time set for award of
bids (see 4.2 and 6.3). Any change in the formulation of a qualified product shall necessitate its
requalification.
3.2 Materials. Component materials used in the manufacture of this lubricant shall
consist essentially of finely powdered lubricating solids dispersed in a suitable liquid binder. The
lubricant shall be effective when applied by brushing, dipping, or spraying. The applied film
shall meet all requirements both after being cured for 1 hour at 204 ± 15°C and after being cured
for 2 hours at 150 ± 15°C. The curing time shall be counted from the time the part reaches the
cure temperature, not when the part is first subjected to heat. The lubricants shall contain no lead
or lead-containing compounds, ozone depleting substances, graphite, powdered metals, carbon
black, charcoal or other forms of inorganic carbon (see 6.5 and 6.10).
3.3 Film appearance and thickness. The bonded solid film lubricant, when examined as
specified in 4.5.1, shall appear uniform in color and shall be smooth, free from any cracks,
scratches, pinholes, blisters, bubbles, runs, sags, foreign matter, grit, rough particles, or
separation of ingredients. The coating thickness shall be between 0.008 mm and 0.013 mm. All
readings of the coating thickness shall be not less than 0.005 mm or greater than 0.018 mm.
3.4 Film adhesion. A bare metal surface shall not be exposed after lifting the tape when
tested as specified in 4.5. A uniform deposit of powdery material clinging to the tape shall be
considered acceptable.
3.5 Resistance to fluids. After immersion in each of the fluids as specified in Table I, no
bare metal surface shall be exposed after removing the tape as specified in 4.5. A uniform
deposit of powdery material clinging to the tape shall not be considered a failure. Also, the
bonded solid film lubricant shall not soften, lift, blister, crack, or peel after exposure to the fluids
when tested as specified in section 4.5.
3.6 Thermal stability. When tested as specified in 4.5, the solid film lubricant shall not
flake, crack, or lift and shall conform to the requirements for film adhesion (see 3.4).
3.7 Endurance life. When tested in four trials in accordance with 4.5, the bonded solid
film lubricant shall have an average endurance life at 1000 pounds load (lbf) of 450 minutes. All
individual tests shall be not less than 390 minutes.
3.8 Load carrying capacity. When tested in two trials in accordance with 4.5, the bonded
solid film lubricant shall have a load capacity of 2500 lbf (11,120 N). All individual tests shall
not be less than 2250 lbf (10,000 N).
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