The precision and bias of the test method described in ASTM D2794 have been evaluated through interlaboratory testing. The results of this testing have shown that the test method is reliable and reproducible.
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The weight strikes the uncoated side of the panel, causing the coating to stretch outward (extrusion). Standard Test Procedure The precision and bias of the test method
ASTM D2794 is a standard test method that measures the resistance of coatings to rapid deformation. The test, also known as the "Impact Resistance of Coatings" test, assesses the ability of a coating to withstand deformation caused by a sudden impact. The test method involves dropping a weighted indenter onto a coated panel, simulating a rapid deformation event. The coating's resistance to deformation is then evaluated based on the resulting damage. The weight strikes the uncoated side of the
: Technicians gradually increase the drop height, usually in 1-inch (25 mm) increments, until a visual failure is observed. Failure Detection