ASTM D2794 is a standard test method established by ASTM International. It measures the ability of organic coatings to resist cracking or peeling when subjected to a rapid impact that causes a deformation in the substrate.
Repeat the test at various heights to find the maximum impact force where no failure occurs, or the exact point where 50% of the tested areas show cracking. This value is recorded as the of the coating. Why Is ASTM D2794 Crucial for Industry? Quality Control and Consistency astm d2794 pdf
While highly effective, ASTM D2794 is an empirical test rather than a fundamental scientific measurement. Its limitations include: ASTM D2794 is a standard test method established
There is no universal "pass/fail" value in ASTM D2794. The standard only tells you how to test, not what the result should be. The acceptable value is negotiated between the (coating manufacturer) and the customer (the factory using it). This value is recorded as the of the coating
Metal sheets are often coated before being stamped and shaped into cans or building panels. The coating must survive extreme fabrication deformation.