MIL-PRF-14105E
3.6.5 Drying properties.
3.6.5.1 Air drying. The paint, when applied to steel panels as specified in 4.20.1, shall dry tack-
free within 1 hour to a smooth film free from sags, runs, creep, orange peel, pits, and streaks.
3.6.5.2 Baking. The paint, when applied to steel panels as specified in 4.20.2, shall form an
adherent, hard, tough film free from blisters, sags, runs, creep, orange peel, pits, and streaks.
3.6.6 Water resistance. A film of the paint applied and tested as specified in 4.21 shall show no
wrinkling, blistering, softening, or loss of adhesion.
3.6.7 Jet propellant 8 (JP8) resistance. A film of the paint tested as specified in 4.22 shall show
no wrinkling or blistering immediately after removal of the panel from JP8. The paint film shall
show no defect other than some gloss change after testing.
3.6.8 Salt spray resistance. A film of the paint prepared and tested as specified in 4.23 shall show
no corrosion, creepage, or undercutting beyond 1/8 inch (3.175 mm) from the scratch mark. The
scribe line areas shall have ratings as specified in ASTM D1654 method A of not less than six (6) for
steel. At all other points of the panel, there shall be no more than a trace of rusting (ASTM D610,
table I, rust grade number 9) and no more than five (5) scattered blisters no larger than 0.03937
inches (1 mm) in diameter.
3.6.9 Accelerated weathering. When subjected to the accelerated weathering test specified in
4.24, the paint film shall show only slight color change or chalking.
3.6.10 Recoating properties. Recoating the test surface as specified in 4.25 shall produce no
lifting, blistering, pinholing, or other film irregularity.
3.6.11 Adhesion. The assessment of the adhesion of the coating film shall be determined by its
ability to not peel from the substrate as specified in 4.26 when tested in accordance with
ASTM D3359. After bake cured, the resultant test rating shall be classified as scale 4B or better,
when tested as specified in 4.26.
3.6.12 High temperature resistance.
3.6.12.1 Heat exposure cycle. When tested as specified in 4.27.1, the paint film shall show no
cracking, flaking, or chipping after being exposed to one heat exposure cycle.
3.6.12.2 Salt spray. When tested as specified in 4.27.2 and examined immediately after removal
from the salt spray test, the scribed areas on the paint film shall have ratings as specified in ASTM
D1654 method A of not less than six (6) for steel. The paint film shall show not more than a trace of
rusting (ASTM D610, table I, rust grade number 9).
3.6.12.3 Quenching cycle. When tested as specified in 4.27.3, the paint film shall show no
cracking, flaking, or chipping.
3.6.12.4 Accelerated weathering (high temperature). When tested as specified in 4.27.4, the paint
film shall show no marked checking, color change, or chalking.
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