MIL-PRF-23377K
If a topcoat is not used, the primer coatings shall be allowed to air dry for not less than 14 days,
prior to testing. If a topcoat is required, the primer coatings shall be air-dried for 5 hours and
then coated with a polyurethane coating conforming to MIL-PRF-85285 in accordance with
4.4.2.
4.4.2 Application of topcoat. When a topcoat is required by the test method, mix
polyurethane coating conforming to MIL-PRF-85285, Type I or IV, adding thinner, if required,
and allow it to stand 30 minutes prior to application. Type I primer coatings shall be coated with
untinted gloss white conforming to FED-STD-595, color number 17925 and Type II primer
coatings shall be coated with camouflage grey conforming to FED-STD-595, color number
36375. For filiform corrosion resistance testing (see 4.5.8.2) both Type I and Type II primer
coatings shall be tested with FED-STD-595, color number 17925. Apply the topcoat to a total
dry-film thickness of 43 to 58 µ m (1.7 to 2.3 mils) in accordance with ASTM D823 Method D.
If the topcoat is applied in two coats, allow the first coat to air dry for 60 minutes prior to
application of the second coat. After application of the topcoat to the required thickness and
prior to testing, allow the coating to air dry for not less than 14 days.
4.5 Test methods. The tests of this specification shall be conducted in accordance with
table II and 4.5.1 through 4.5.12. Unless otherwise specified in the test method or paragraph,
laboratory test conditions shall be in accordance with ASTM-D3924. Room temperature
conditions shall be 18 to 29.5 C (65 to 85 F) and a relative humidity of 50 0 percent.
TABLE II. Test Methods.
Requirement
Test
Test
Test Method
Paragraph
Paragraph
Lead and cadmium content
3.4
---
ASTM D3335
Chromium content (class N only)
3.4.1.3
---
ASTM D3718
VOC solvent content
3.4.2
---
ASTM D3960
Fineness of grind
3.5.1
---
ASTM D1210
Condition in container
3.5.2
4.5.1
---
Storage stability
3.5.3
---
---
Accelerated storage stability
3.5.4
4.5.2
ASTM D1849
Color Type I
3.6.1.1
---
Visual
Color Type II
3.6.1.2
---
Visual
Odor
3.6.2
---
ASTM D1296
11
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business