The painted or otherwise coated sheet metal specimen is drawn into a die using a spherical nose punch, thus stretching the material until the coating cracks or peels off. The depth to which the material has been drawn by the punch when the coating fails is the measure of the quality of the paint or coating material and relates to the elongation and adhesive properties. This simple hand operated Testing Machine is particularly suitable for quality control on lacquers, paints, plastic coatings and enamels in smaller establishments.
Model 200 is used for the ERICHSEN CUPPING TEST in accordance with DIN ISO 1520, ISO 1520, BS 3900 : Part E4, NF T 30-019 und SIS 18 41 77 on coated sheet metal, with a tensile strength of 400 N/mm², up to 1.25 mm thick and from 70 - 90 mm wide.