Test: ASTM D2794
Impact Resistance (ASTM D2794) measures the resistance of organic coatings to the effects of rapid deformation (Impact). Impact resistance is measured by placing a coated panel in an universal impact tester. A standard weight is dropped a distance to strike an indenter that deforms the coating and the substrate. The indentation can be either an intrusion or an extrusion. By gradually increasing the distance the weight drops, (1 inch at a time) the point at which failure occurs can be determined by cracking or delamination of the coating. Cerakote MC-160 was tested to have an impact strength measuring 120 inch-lbs. and H-300 was tested to have an impact strength measuring 160 inch-lbs. which is the maximum the impact tester can measure.