NPFC - MIL-PRF-24635
COATING SYSTEMS, WEATHER-RESISTANT, EXTERIOR USE
|Publication Date:||15 September 2009|
This specification establishes the performance requirements for weather-resistant coating systems for use on primed, smooth metal, glass reinforced plastic (GRP), wood and plastic/composite exterior surfaces.
Classification. Coatings are of the following types, classes, and grades, as specified (see 6.1 and 6.2).
Type II - Standard durability coatings with Volatile Organic Compound (VOC) Content not greater than 340 grams per liter (g/L) [2.8 pounds per gallon (lb/gal)] (Colors restricted to non-gray marking or striping colors.)
Type III - Standard durability coatings with VOC not greater than 250 g/L (2.08 lb/gal)
Type IV - Standard durability coatings with VOC not greater than 100 g/L (0.83 lb/gal)
Type V - High durability coatings with VOC not greater than 250 g/L (2.08 lb/gal)
Type VI - High durability coatings with VOC not greater than 100 g/L (0.83 lb/gal)
Class 1 - High gloss, >85
Class 2 - Semigloss, 45 to 60
Class 3 - Low gloss, 7 to 12
Grade A - Standard pigmented
Grade B - Low solar absorbent (26173, 26270, 26373, and 26008)
Grade C - Low solar absorbent and anti-stain (26008 and 26270)