This Tester is used to evaluate the hardness of the coating film. Scratch the surface of the film with a pencil at a 45° angle. The operator should be sure that the hardest pencil will not tear or damage the film. The Tester can also be used to evaluate the hardness of decorative panels and the resistance of solvents on enamelled wire.
JIS-C3003, D0202, (K5400), K5600-5-4, K5651, K6894, K6902, ASTM-D2197, D3363, ISO-15184, GB/T6739
Scratch the surface of the coating film with a hardness pencil to test the surface hardness of the coating film layer. The hardness pencil is fixed at an angle of 45°, so that the tip of the tip is in contact with the surface of the coating film layer, and an appropriate load is applied at a certain speed (jis specification 0.5mm/second) The mobile test platform makes the surface of the coating layer move past the core, and the softest pencil grade that will not cause damage (scratches) to the coating layer can be regarded as the hardness of the coating layer.