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ASTM D3359)
 
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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