A cylindrical block with a central hole matching the indenter diameter, allowing the panel to deform into the cavity. Test Panels
A graduated tube (typically 24 to 40 inches long) that guides a falling weight. It features markings to measure the exact height from which the weight is dropped.
A mechanism to hold the test panel securely in place during impact. Step-by-Step Testing Procedure astm d2794 pdf
What are you testing (e.g., powder coating, liquid paint)? What is your substrate material and its thickness ?
The apparatus must be placed on a rigid, vibration-free surface. The operator selects the appropriate weight and indenter head geometry based on the product specification sheet or client requirements. 3. Executing the Drops A cylindrical block with a central hole matching
Impact Energy=Weight (lbs)×Height (inches)Impact Energy equals Weight (lbs) cross Height (inches)
By understanding and correctly applying ASTM D2794, coating manufacturers and end-users can quantify "toughness" with scientific rigor. Whether you are testing automotive clearcoats, industrial enamels, or powder coatings, this standard remains the definitive method for rapid deformation resistance. A mechanism to hold the test panel securely
The weight strikes the uncoated reverse side of the panel, causing a convex deformation on the coated side. Test Equipment and Components
By dropping a standard weight from various heights onto a coated metal panel, technicians can calculate the precise point at which the coating can no longer flex with the deforming substrate. This gives manufacturers a clear baseline for coating elasticity, adhesion, and brittle characteristics. 3. Apparatus and Equipment Requirements
The full, official standard is a protected document available through ASTM International .