Cupping Tester

About Cupping Tester

Cupping Tester 

It is used for assessing the cupping ability of coatings applied to metal sheets up to 1.2mm thick. It is applicable to evaluate crack resistance and detachment from the metal substrate of coated surface which is coated with paint, varnish, etc., after the coating layer is deformed gradually under standard condition. The sample panelmax. 1.25mm thick70 mm width, coated min.0.03mmis clamped by an upper wheel and manually cupped by a 20mm hemispherical indenter onto a 27mm die by a drive wheel. The depth to cause failure is indicated on a precise digital display. The results can be easily observed with an illuminated magnifier.