MIL-DTL-450D
Table II. Quantitative requirements.
Requirements
Minimum
Maximum
Test
Method
Total solids, percent by weight of compound:
4.4.2
Type I
36
40
Type II
45
55
Type III
79
85
Water, percent by weight of compound
-
0.5
4.4.3
Mineral matter, percent by weight of compound
-
1
4.4.4
Manganese, percent by weight of compound
-
0.05
4.4.5
Lead, percent by weight of compound
-
0.02
4.4.6
Insoluble in carbon disulfide, percent by weight of compound
-
0.5
4.4.7
Acidity (as sulfuric acid), percent by weight of compound
-
0.01
4.4.8
Alkalinity (as sodium hydroxide), percent by weight of compound
-
0.01
4.4.8
Viscosity:
4.4.9
Type I - No. 4 Ford cup, seconds
15
28
Type II - No. 4 Ford cup, seconds
120
190
Type III - Penetration test value, tenths of mm (see 4.4.9)
150
250
Drying time:
4.4.10
Dust free
Type I, minutes
-
5
Type II, minutes
-
5
Type III, hours
-
8
Free from after-tack
Type I, hours
-
0.5
Type II, hours
-
1
Type III, hours
-
24
3.5 Qualitative requirements.
3.5.1 Storage properties. When tested as specified in 4.4.11, the coating compound shall
show no livering, thickening, or settling.
3.5.2 Dilution stability (Type II only). When tested as specified in 4.4.12, the coating
compound shall remain stable and show no evidence of precipitation.
3.5.3 Brushing properties (Type II only). When tested as specified in 4.4.13, the coating
compound, as packaged, shall be capable of being brushed out to a smooth film, free from
discontinuities or other defects.
3.5.4 Spraying properties, appearance when dry (Types I and II only). When tested as
specified in 4.4.14, the coating compound shall have satisfactory spraying properties in every
respect. The dry film shall present a smooth, glossy appearance, free from irregularities and
rough particles.
3.5.5 Water resistance. A film of the coating compound prepared and tested as specified in
4.4.15 shall withstand immersion in distilled water without blistering, whitening, softening, or no
more than a slight dulling.
5
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