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The next mechanical test performed was the rigorous
Crosshatch Adhesion Test, ASTM D3359. This test involves cutting a grid
of 100 squares into the coated panels. A pressure sensitive tape is applied
over the grid, and then rapidly peeled away. The number of squares remaining
on the panel gives a relative percentage value of adhesion. Original specimens
of Wasser® Brand System (panel number 6), POR-15® System (panel
number 8), and Rust Bullet® (panel number 2), were evaluated for adhesion
in accordance with the procedure set forth in ASTM D3359.
Results:>
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100% adhesion |
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100% adhesion |
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96% adhesion
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Printed from National Testing Standards, Inc., Certificate:
“Test No. 8:
Method: Original specimens of panels 2, 6, and
8 were evaluated for adhesion in accordance with the procedure set forth
in ASTM D-3359.
Results: Panels 2 and 6 exhibited 100% adhesion. Panel no. 8 exhibited
96% adhesion.”
(Report No.27935R2 National Testing Standards, Inc.)
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