MIL-PRF-24667C
3.24 Immersion resistance (type X only). When tested in accordance with 4.5.21, the non-skid coating system
shall show no pinhole rusting, cracking, or loss of adhesion either between coats or to the substrate. There shall be
no blistering rated in excess of ASTM D714, blister size number 4, Few. There shall be no surface imperfections
(includes peeling) larger than 1/16 inch (1.5 millimeters) and any blistering shall be unbroken. Blisters and surface
imperfections smaller than 1/16 inch, which do not increase in size after the fourth month and that do not exceed 3
percent of the test panel surface area, shall not be considered failures. Undercutting at the scribe in excess of inch
(3.2 millimeters) shall be considered a failure. Physical damage caused by handling may be ignored in condition
evaluation.
3.25 Cathodic protection (CP) compatibility (type X only). When tested as specified in accordance with 4.5.22,
the coating system shall not peel, flake, blister, dissolve, or otherwise fail. Undercutting or peeling shall not exceed
4 percent of the area of the test panel and all undercutting and peeling shall be located adjacent to the holiday.
3.26 Pressure cycling (type X only). Pressure cycling shall be performed to determine compatibility of the non-
skid applied to Special Hull Treatment (SHT) under simulated in-service conditions. When tested in accordance
with 4.5.23, the non-skid applied to the SHT tile shall be visually inspected for cracks and delamination. Any
delamination of non-skid from the substrate, cracks in excess of 1/16 inch in depth or revealing substrate, and cracks
greater in length than three inches shall result in failure of the non-skid.
3.27 Strippability (type X only). When tested in accordance with 4.5.24, non-skid shall be removable from
Special Hull Treatment (SHT) without significant damage to the substrate or seam filler. The removal rate of the
non-skid shall be less than 30 minutes per SHT tile (21 by 22 inches).
3.28 Storage stability (types I-X).
3.28.1 Long-term storage stability. When tested in accordance with 4.5.25.1 the liquid one-part coating, or
components of two-part coatings which have been stored for 1 year in their original containers at room temperature
(75 °F average room temperature) shall, when mixed in accordance with the directions specified in 3.33, produce a
coating system which meets all the requirements of this specification except 3.34.
3.28.2 Accelerated storage stability. When tested in accordance with 4.5.25.2, each individual coating of the
non-skid coating system shall meet the requirements of 3.28.1. When tested as specified in 4.5.13, there shall be no
discernable color difference between the non-skid and the color chip.
3.29 Weight. When tested in accordance with 4.5.26, the mass of the cured non-skid system, including
aggregate, shall not exceed the values in table XI.
TABLE XI. Weight.
Grams per centimeter
Pounds per square foot
squared (g/cm2),
(lb/ft2), maximum
maximum
Types I, V, VI, VII,
0.484
0.99
VIII, and IX
Types II, IV, and X
0.215
0.44
Type III
0.807
1.66
Type XI
0.30
0.62
3.30 Thickness (type XI only). When tested in accordance with 4.5.27, the deck covering shall not exceed
0.080 inches in thickness when applied to the steel deck.
3.31 Size (type XI only). When tested in accordance with 4.5.28, deck covering shall be furnished in treads 6
by 24 inches, 8 by 30 inches or in rolls in 1½, 6, 8, 14, and 24 inches wide and 96 feet long, as specified (see 6.2).
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