TT-P-645 Paint, Alkyd Type, Formula Number 84This specification covers an anticorrosive paint for general purpose applications to steel and aluminum. The paint contains a maximum of 250 grams of volatile organic compounds VOC per liter 2.08 pounds of VOC per gallon. This paint is to be used as supplied with no thinning.

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TT-P-645C

TABLE VII. Test procedures - Continued.

Property	Requirement	Test
Drying time Dry to touch 1/ Dry through	Table III	ASTM D5895
Fineness of grind 1/	Table III	ASTM D1210
Flash point 1/	Table III	ASTM D3278
Gloss 1/	Table III	ASTM D523
Sag resistance 1/	Table III	ASTM D4400
Odor	3.4.1	ASTM D1296
Color 1/ and Surface appearance 1/	3.4.2 3.4.10	4.6.10, ASTM D1729 4.6.11, FED-STD-141 Test Method 3011.1
Flexibility	3.4.3	4.6.5, ASTM D522
Condition in container	3.4.5	4.6.6, FED-STD-141 Test Method 3011.3, ASTM D869
Storage stability Full container Partially full container	3.4.5.1.1 3.4.5.1.2	ASTM D869 4.6.7.1, FED-STD-141 Test Method 3011.3, ASTM D1849 4.6.7.2, FED-STD-141 Test Method 3021.1
Brushing properties	3.4.6.1	FED-STD-141 Test Method 4321.3
Spraying properties	3.4.6.2	FED-STD-141 Test Method 2131.2/4331.2
Water resistance	3.4.8	4.6.8
Compatibility with topcoats with primer and undercoats	3.4.9.1 3.4.9.2	4.6.9.1, ASTM D3359 4.6.9.2
Contrast ratio	Table III	ASTM D2805
Off-gassing	3.10	4.8
NOTES: 1/ Quality conformance inspection test (see 4.3). 2/ By data certification. Test methods (if applicable) are provided for information only.

4.6 Test methods and test panel preparation. Test methods shall be in accordance with table VII.

4.6.1 Panel preparation. Steel panels [minimum size 75 millimeter by 150 millimeter by 3 millimeter (3 inches by 6 inches by 0.12 inch) thick (nominal)] shall be prepared for testing by abrasive blasting to a near-white metal surface in accordance with SSPC-SP 10 to achieve a minimum 0.051 millimeter (0.002 inch; 2.0 mil) surface profile. The blasted panels shall be solvent wiped to remove any traces of oil or residue, blown dry with dry air, wrapped in plastic and stored in a desiccator, oven, or air-tight storage bag, or use other means to prevent rusting prior to

coating. The abrasive used for blasting shall be in accordance with MIL-A-22262 and be listed on the current qualified products list. Unless otherwise specified in the applicable test paragraph of this specification, the test panels shall be coated with TT-P-645 paint applied in one coat at a wet film thickness that will yield a dry film thickness 50 percent greater than the blast profile. Unless otherwise specified in the applicable test paragraph of this

specification, dry time shall be 48 hours at 21 °C (70 °F).

4.6.2 Soluble and total metal content. Asbestos, soluble and total metal content, except tantalum and tungsten, shall be determined on a dry film of the paint in accordance with the 40 CFR 261.24(a), Method 1311 and the appropriate test listed below. Asbestos shall be analyzed in accordance with 29 CFR 1915.1001, Appendix K, and the results shall be recorded as percent by weight of the dry paint film. Soluble metal content shall be analyzed as milligrams per liter (mg/L). Total metal content shall be analyzed as percent by weight of the dry paint film. The test results

for asbestos, each individual soluble metal, and total metal shall be as specified in 3.3.1, table III, table IV, and table

V. Tantalum and tungsten soluble metal content and total metal content shall be analyzed as specified in 4.6.2.1.