Astm-d2794 'link'

The principle of ASTM D2794 is surprisingly simple. A coated metal panel is placed in a fixture, and a weighted, rounded indenter is dropped from a specific height onto the coated surface.

Officially titled “Standard Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact),” this standard is one of the most widely referenced methods for determining how well a coating adheres under stress. astm-d2794

It identifies brittle coatings before they leave the factory. A coating that fails at 10 in-lbs will likely chip or flake during handling, whereas a coating passing at 100+ in-lbs is suitable for heavy-duty industrial environments. The principle of ASTM D2794 is surprisingly simple