Describes a test method for assessing the hold of paint coatings to separation from substrates when a right - Angle lattice pattern is cut into the coating, penetrating through to the substrate. The property measured by this empirical test procedure depends, among other factors, on the adhesion of the coating to either the preceding coat or the substrate. This procedure is not to be regarded, or, as a means of measuring adhesion.
The method described may be 2 either as a pass/fail The test or, where circumstances are appropriate, as a six - step classification test. When applied to a multi - coat system, assessment of The hold to separation of individual from The layers of The coating from each other may be made.