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Pencil Hardness Tester | Coating Hardness Tester | Scratch Resistance Tester | Wolff-Wilborn Tester
Coating hardness testing | Scratch resistance evaluation | Paint film hardness assessment | Surface durability testing | Quality control inspection
Pencil hardness test (Wolff-Wilborn method) | Scratch resistance measurement | Surface hardness evaluation | Coating performance testing
Paint & Coatings | Automotive | Furniture | Industrial finishing
Details
The Elcometer 501 Pencil Hardness Tester has been designed to ensure that the cylindrical pencil lead is maintained at a constant angle of 45° and exerts a force of 7.5N (1.68lbF).
The pencil hardness test also referred to as the Wolff-Wilborn test, uses the varying hardness values of graphite pencils to evaluate a coating’s hardness.
The pencil lead, prepared beforehand using the special sharpener and abrasive paper, is inserted into the Elcometer 501 hardness tester and pushed over the smooth, flat coated surface.
The lowest hardness value of the pencil which marks the coating determines the coating’s hardness rating.
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