gal\) \(maximum\)] volatile organic content \(VOC\) gray, interior deck enamel \(Formula No. 20L\) for shipboard use as a general purpose interior deck enamel for application to either primed steel or aluminum \(see 6.1\). Product is supplied in a single can and used as supplied.

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MIL-DTL-700B

Methods for Chemical Analysis of Water

and Waste, EPA 600/4-020

Test method

Metal/material

Beryllium

210.1 or 210.2

Cobalt

219.1 or 219.2

Copper

220.1 or 220.2

Fluoride

340.1, 340.2, or 340.3

Molybdenum

246.1 or 246.2

Thallium

279.1 or 279.2

Vanadium

286.1 or 286.2

Zinc

289.1 or 289.2

4.6.2.1 Tantalum and tungsten content. Determine the tantalum and

tungsten content of the enamel using any appropriate spectroscopy test method.

Conduct the tests in accordance with the equipment manufacturer's directions

for the use of the instrument. Paint manufacturer is responsible for

justifying the test method choice and analytical accuracy. Test results for

tantalum and tungsten shall be as specified in table III and table IV.

4.6.3 Hazardous solvent content. Hazardous solvent content shall be

determined in accordance with methods 7356 and 7360 of FED-STD-141 or

ASTM D 3272. Solvent fractions shall be identified in accordance with

ASTM E 1252. Test results shall be recorded as percent by weight of the total

enamel. The test results for each solvent shall be as specified in 3.3.2 and

table V.

4.6.3.1 Alternate analysis methods. Manufacturer may use other

analysis methods if such methods are shown to identify and quantify the

hazardous air pollutants with the accuracy required (see 6.3).

4.6.4 Volatile organic content (VOC). VOC shall be determined in

accordance with 40 CFR 60, Appendix A, Method 24. VOC shall be as specified

in table II.

4.6.5 Drying time. Drying time shall be determined in accordance with

method 4061.2 of FED-STD-141, except that the specified conditions of

temperature and humidity shall apply only for referee tests in case of

dispute. All other tests shall be conducted under prevailing laboratory

conditions. Time of drying to touch and time of drying to recoat in hours

shall be as specified in table II.

4.6.6 Flexibility. Flexibility shall be determined in accordance with

method 6221 of FED-STD-141. The enamel shall be applied to a flat metal plate

of approximately 31 gauge coated with a dry film thickness of 0.025 mm (0.001

inch + 0.0003 inch) of TT-P-645 primer by means of a doctor blade capable of

yielding a dry film thickness of 0.025 mm (0.001 inch + 0.0003 inch). The

panel shall be allowed to air-dry for 2 hours then baked for 24 hours at 100

to 105 C (212 to 221 F). The panel shall then be removed from the oven and

allowed to stand for 30 minutes at laboratory temperature [nominal 23 C

(73 F)]. The panel shall then be bent over a 3.2-mm (1/8-inch) mandrel and the

film examined at the bent under a magnification of five diameters.

Flexibility shall be as specified in 3.4.3.