Helbig & Lang - The surface finishing specialist
Mandrel Bending Test
Depending on the application, coatings must be resistant to certain mechanical forces. One of the issues here is the bending strength of a coating. Therefore, the mandrel bending test according to DIN EN ISO 1519 is made in-house. The process is the same for aluminium and steel substrates. The plates are bent around a defined mandrel diameter and the result is then analyzed for possible cracking and peeling of the coating from the substrate.