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ASTM D3359) |
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CROSS HATCH ADHESION TEST
(ASTM D3359)
Scribe parallel lines through coating to substrate, 1/4" apart over a
distance of one inch. Scribe another set of parallel lines 1/4" apart
and perpendicular to the first set. Apply 3M 4-9239 tape then remove
slowly. Results should be no lifting of film between scribe lines.
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