BS EN 13523-6-2002 "Coil-coated metals. Test method for post-marking bonding (cup extrusion test) ", published by the European Committee for Standardization. It specifies the terminology relevant to the procedure for measuring the adhesion of organic coatings to metal substrates when they are etched after slow deformation, carried out by cup extrusion test, which also assesses the cracking resistance of coatings and is classified as a surface feature in the classification of international standards.