MIL-PRF-24635E
Copper
25.0
0.01
Fluoride Salts
180.0
0.18
Lead
5.0
0.005
Mercury
0.2
0.0002
Molybdenum
350.0
0.035
Nickel
20.0
0.02
Selenium
1.0
0.002
Silver
5.0
0.001
Tantalum
100.0
0.100
Thallium
7.0
0.007
Tungsten
100.0
0.100
Vanadium
24.0
0.01
Zinc
250.0
0.25
NOTE:
1/
Total cobalt content may exceed 0.005 %WT (up to 0.2 %WT) only if a cobalt drier is used to
effect proper drying. However, soluble cobalt content may not exceed table I requirements.
3.5.1.3 Hazardous air pollutants (HAPS). The content of the HAPS solvents in the coating shall be less than
the weight percent (%WT) values listed in table II. Within these limitations and the requirement that the finished
coating meet all requirements of this specification, solvent selection is the responsibility of the manufacturer. HAPS
materials are defined by 40 CFR 63.
TABLE II. Hazardous air pollutant solvent content limits.
Hazardous solvent in mixed coating or its components
Maximum, %WT
Benzene
0.05
Chlorinated solvent(s), total
0.05
Solvents containing fluorine as defined by 40 CFR 82
0.01
Ethyl benzene
0.05
0.05
Methyl, ethyl, and butyl mono-ethers of ethylene glycol or the
acetates thereof, total (also known as methyl, ethyl, and butyl cello
solves and methyl, ethyl, and butyl cello solve acetates)
Methyl ethyl ketone (MEK)
0.05
Methyl isobutyl ketone (MIBK)
0.05
Toluene
0.05
Xylene (all forms), total
0.1
3.5.1.4 Volatile organic content (VOC).
3.5.1.4.1 Type II. The VOC shall not exceed 340 grams per liter (2.8 lb/gal).
3.5.1.4.2 Types III and V. The VOC shall not exceed 250 g/L (2.08 lb/gal).
3.5.1.4.3 Types IV and VI. The VOC shall not exceed 100 g/L (0.83 lb/gal).
3.5.1.5 Paint thinners. Thinning of VOC compliant paint is not allowed. The paint must be able to meet the
viscosity requirements and to be applied without the addition of thinning agents.
8
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