MIL-PRF-23236D
4.5.6 HAP content of coatings. Hazardous solvent content of each individual coating shall be determined in
accordance with EPA Test Method 311and ASTM E260. Solvent fractions shall be identified in accordance with
ASTM E1252 with the results recorded as percent by weight of the total paint. Alternate methods of analysis must be
reviewed and approved by NAVSEA. Formulation data may be used by manufacturers in lieu of testing to
demonstrate compliance with HAP requirements of this specification. The manufacturer's formulation data must have
a consistent and quantitatively known relationship to the testing required. Calculation of individual HAP content can
be based on either the manufacturer's evaluation of batches or the supplier's data for raw materials used in the
product. HAP content shall be specified in 3.2.2.3.
4.5.7 Brushing and rolling properties (not applicable to Types VIII or VIIIa). Coatings shall be prepared in
accordance with manufacturer's directions. Coatings shall be applied without further reduction in accordance with
Method 4321.2 of FED-STD-141 for brushing and ASTM D5150 for rolling. For routine testing, ambient conditions
above 21 °C (70 °F) and 50 percent relative humidity shall be satisfactory. For referee tests, Federal Test Method
Standard No.141, Section 9 shall prevail. For reduced temperature coating systems, brushability and rolling
properties shall be performed with mixed coating, components, and equipment equilibrated at the lower end of the
temperature range. The actual brushing can be performed at ambient laboratory conditions so long as the paint and
equipment are at the low range application temperature. Brushing and rolling properties shall be as specified in 3.8.
4.5.8 Spraying properties. The coating shall be prepared in accordance with the manufacturer's directions.
Without further reduction, spray a coating on an abrasive blasted steel panel to the recommended wet film thickness.
For routine testing, ambient conditions above 21 °C (70 °F) and 50 percent relative humidity shall be satisfactory. For
referee tests, 21±3 °C (70±5 °F) and 50±5 percent relative humidity shall prevail. For reduced temperature coating
systems, sprayability shall be performed with mixed coating, components, and equipment equilibrated at the lower
end of the temperature range. The actual spraying can be performed at ambient laboratory conditions so long as the
paint and all equipment are at the low range application temperature. The equilibration requirement for mixed paint
does not apply to spraying using spray equipment that mixes the components at the gun, either internally or externally,
however, coating components and all equipment shall be at the low range application temperature. Observe for
spraying properties in accordance with Method 4331.2 of FED-STD-141. Spraying properties shall be as specified in
3.8. Type VIII and VIIIa powder coating shall be applied in accordance with manufacturer's instructions to meet 3.8.
4.5.9 Edge coverage retention (applicable to topcoat only of Type VII, all classes, all grades). Panel preparation,
paint application and percent of dry film thickness retained on an edge shall be as described in Appendix A of this
specification. Scaled photomicrographs of each edge shall be taken. This test procedure will be conducted at
government expense at the Naval Research Laboratory, Key West, Florida. Coating shall meet 3.8.1.
4.5.10 Hazardous pigments and additives. Soluble and total metal content, except tantalum and tungsten, shall
be determined on pulverized dry paint film of the coating system in accordance with 40 CFR 261, Appendix II and the
appropriate test listed below. Test sample shall consist of particle sieved through a U.S. sieve no. 50. Asbestos shall
be analyzed in accordance with OSHA Validated Analytical Method ID-191, with the coating sample treated as a bulk
settled dust and test result reported as percent by weight of the cured coating. Crystalline silica (respirable) shall be
analyzed in accordance with NIOSH Analytical Method 7500 with the coating sample treated as a bulk settled dust.
Soluble metal content shall be reported as milligrams per liter. Total metal content shall be reported as percent by
weight of the cured coating. The test results for each metal shall be in conformance with the appropriate requirements
of 3.2.3.1. Tantalum and tungsten soluble metal content and total metal content shall be analyzed as specified in
4.5.10.1. Calculation of individual hazardous metal contents can be based on either the manufacturer's testing of
batches, or the supplier's data for raw materials used in the product. The coating manufacturer must provide for each
individual hazardous metal a formulation value that will not be exceeded if a sample from any quality control
approved production batch of the coating is tested in accordance with this paragraph. Type VIIIa may have a high
zinc content due to the presence of sacrificial zinc.
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