MIL-PRF-24667C
3.10 Flash point (types I-X). When tested in accordance with 4.5.7, each individual coating of the non-skid
system mixed for use shall not flash at temperatures lower than 100 °F (38 °C) except color toppings, which shall
not flash at a temperature lower than 80 °F (27 °C).
3.11 Resistance to chemical solutions. When tested in accordance with 4.5.8, the non-skid system shall show
no softening, loss of adhesion, separation between coats of the system, discoloration, or other signs of deterioration.
3.12 Resistance to accelerated aging by light and water (types I-X). When tested in accordance with 4.5.9, the
non-skid system shall:
a.
Show no loss of adhesion or separation between coats of the system when exposed to ultraviolet light and
condensation of water.
b.
The topcoat shall show no cracking more than is indicated by a rating of 6 (ASTM D661).
c.
The topcoat shall show no checking more than is indicated by a rating of 6 (ASTM D660).
3.13 Resistance to accelerated corrosion (types I-X). When tested in accordance with 4.5.10, the non-skid
system shall show no loss of adhesion, separation between layers of the system, or corrosion of the steel substrate
beyond a -inch (9-millimeter) radius from the centers of the impact areas or beyond inch (9 millimeters) from
the edges of the scribe for Type V materials.
3.14 Appearance of the dried coating (types I-X). When tested in accordance with 4.5.11, the primer and
intermediate coats, if any, shall dry to a smooth, uniform film, free of spotting, streaking, mud cracking, wrinkling,
cratering, or blistering. When non-skid coatings are applied by napless roller, the non-skid topcoat shall have a
textured appearance of roughly parallel rows of raised coating, forming peaks or ridges. When the Types I, II, III, V,
VI, VII, VIII, XI, and X non-skid coatings are applied by napped roller or trowel, the aggregate shall be uniformly
distributed, and shall present a coarse, rough appearance. The non-skid system shall have sufficient sag resistance to
retain the raised, textured appearance in the dried coating. When the Type IV and X materials are applied by spray,
the topcoat shall present a uniformly coarse, rough appearance over the entire surface. The aggregate shall be
distributed uniformly over the surface, and shall protrude prominently above the resin matrix.
3.15 Application properties (types I-X). When tested in accordance with 4.5.12, separate samples of each
individual coating of the non-skid system which have been conditioned and mixed at 50, 75, and 90 °F (10, 24, and
32 °C), shall mix easily with no curdling or separation of ingredients, when the Types I, II, III, V, VI, VII, IX, and X
non-skid topcoat coatings are applied by roller to metal surfaces at 50, 75, and 120 °F (10, 24, and 49 °C),
respectively, there shall be no excess drag or accumulation of coating on the roller, and no excessive spattering of
the coating. When Type VIII is applied by roller to metal surfaces at 35 and 50 °F (2 and 10 °C), there shall be no
excess drag or accumulation of coating on the roller and no excessive spattering of the coating. When Type IV or X
are applied by spray to metal surfaces at 50, 75, and 120 °F (10, 24, and 49 °C), respectively, the material shall flow
evenly without running, dripping, spattering or cobwebbing. The appearance of the coating systems shall meet the
applicable requirements specified in 3.14.
3.16 Color. The non-skid topcoats and color toppings shall be supplied in one of the following colors from
FED-STD-595, as specified (see 6.2): Red to match color 31136; yellow to match color 33538; olive drab to match
color 34088; dark gray to match color 36076; haze gray to match color number 36270, ocean gray to match 36173;
black to match color 37038; green to match 14062; and white to match color 37875. When tested as specified in
4.5.13, there shall be no discernable color difference between the non-skid or color topping and the color chip.
Unless otherwise specified (see 6.2), the color of Type XI shall be black.
3.17 Condition in container (types I-X). When tested in accordance with 4.5.14, liquid one-part coatings, and
individual components of two-part coatings, shall not show skinning, livering, curdling, or separation of ingredients,
nor hard settling which cannot be dispersed to a uniform consistency by 15 minutes of agitation stirring.
3.18 Coverage (types I-X).
3.18.1 Topcoats. When tested in accordance with 4.5.15, coverage shall be as follows:
Type I, V, VI, VII, and VIII non-skid topcoats shall cover not less than 20 square feet per gallon (ft2/gal)
a.
(0.49 square meters per liter (m2/L)) nor more than 30 ft2/gal (0.74 m2/L).
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