For example, if a 4-lb weight dropped from a height of 20 inches causes the coating to crack, but it passes at 18 inches, the impact resistance is reported as . Information Required in the Report:
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Identifies the maximum force (in inch-pounds or kilogram-meters) a coating can withstand before it cracks or delaminates. astm d2794 pdf
Examine the impacted area for visible cracks or delamination.
A cylindrical weight, typically weighing 2 or 4 pounds, that slides freely within the guide tube. For example, if a 4-lb weight dropped from
ASTM D2794 establishes the standard method for evaluating the impact resistance of organic coatings by measuring their ability to withstand rapid deformation [1]. The test determines the maximum weight and height combination that causes coating failure, typically expressed in inch-pounds for quality control and product development. For more details on the testing procedure, visit Micom Laboratories .
Understanding ASTM D2794: The Standard Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact) If you share with third parties, their policies apply
Impact Energy=Weight (lbs)×Drop Height (inches)Impact Energy equals Weight (lbs) cross Drop Height (inches)
The results of ASTM D2794 can be used in a variety of applications, including:
Place the conditioned panel into the apparatus. Position it for either direct impact (coating facing up) or reverse impact (coating facing down). 4. Dropping the Weight
To achieve repeatable data, operators must follow a precise sequence of substrate preparation, conditioning, and execution. 1. Panel Preparation and Conditioning