Scratch Hardness Tester

Used for evaluating the scratch resistance of coatings. Pencil hardness test is an easy and fast method to determine the scratch hardness of coatings on substrates by means of drawing pencil leads of known hardness varying from 9H to 9B at a constant applied mass across the coated surface and is measured according to ASTM norm D 3363-05. The testing unit comprises the body which is the pencil tester, a set of 20 pencils of varying hardness and a special pencil sharpener.