By bending the coated metal substrate at a set radius, the ductility and adhesion of the paint film under the bending stress can be obtained.
The bend tester is a simple and quick method to measure the elasticity of the coating. Just bend the coated test panel on a circular shaft of known diameter, and then check the coating for cracking, peeling or other damage.
Made of anodized aluminum
There are 12 stainless steel shaft rods
Test panels up to 50mm wide can be measured
Shaft diameter: 2, 3, 4, 5, 6, 7, 8, 10, 12, 16, 20, 25, 32 mm
Applying paint to metal substrates
Carefully apply the film and bake it dry to ensure good reproducibility
During the experiment, bend the test substrate to 180° evenly within 1-2 seconds
Starting with the largest diameter mandrel, test in descending diameters until coating breakage is visible
GB/T 6742-2007 Paints and varnishes bending test - cylindrical shaft
ISO 1519-2011