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Cross cut test, scrape adhesion and pull-off test

Coatings must properly adhere to the substrate to perform their job of surface protection. There are generally three procedures to determine the adhesion of paint on its substrate : Cross cut test, scrape adhesion and pull-off test. The cross cut test method specifies a procedure for assessing the resistance of paints and coatings to separation from substrates when a right angle lattice pattern is cut into the coating, penetrating through to the substrate. The method may be used for a quick pass/fail test. When applied to a multi-coat system, assessment of the resistance to separation of individual layers of the coating from each other may be made.

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