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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