MIL-PRF-22750G
TABLE II. Test methods - Continued.
Requirement
Item
ASTM Method
Test Paragraph
Paragraph or Table
Accelerated storage
-
4.7.11
3.5.3
stability
Freeze-thaw stability
-
4.7.12
3.5.4
Mixing properties and
-
4.7.13
3.5.5
pot life
Spraying properties
-
4.7.14
3.5.6
Color
D1729
4.7.15
3.5.7
Adhesion
D3359
4.7.16
3.5.8
Flexibility
D522
4.7.17
3.5.9
Water resistance
-
4.7.18
3.5.10
Hydrocarbon fluid
-
4.7.19
3.5.11
resistance
Fluid resistance
-
4.7.20
3.5.12
Heat resistance
-
4.7.21
3.5.13
Solvent resistance
-
4.7.22
3.5.14
(cure)
Tape resistance
-
4.7.23
3.5.15
Salt spray resistance
B117
4.7.24.1
3.5.16.1
Cyclic corrosion
-
4.7.24.2
3.5.16.2
2/
resistance
STB resistance
-
4.7.25
3.5.17
Accelerated
G155
4.7.26
3.5.18
weathering
Strippability
-
4.7.27
3.5.19
Toxic ingredients
-
4.7.28
3.5.20
1/ EPA Method 311.
2/ General Motors Standard: GMW 14872.
4.7 Analysis of the coating.
4.7.1 Pigment analysis. Extract the pigment as in ASTM D2371, except use ethanol for the
extraction. Make appropriate qualitative and quantitative tests on the extracted pigment to
determine if only permissible pigments were used. Nonconformance to table I shall constitute
failure of this test.
4.7.1.1 Lead content. Determine the presence or absence of lead by weighing 50 mg of pigment
into a small glass test tube. Add 5 ml of dilute HNO3 and shake vigorously for 1-2 minutes. Decant
a one ml aliquot into a plastic micro-centrifuge tube and centrifuge for five (5) minutes at 17,000
rpm - balancing the centrifuge with a tube containing one ml. of the dilute HNO3 solution. This
13
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business