For impact testing of various types of coatings on metal substrates.
According to ISO and ASTM standards, use the clamping device to clamp the test panel on the mold base, so that the surface of the coating outside the test area will be free during the test.
Not affected by rapid deformation due to falling weights.
- Anodized conduit marked with imperial and metric graduations
——A pipe with a slit in the body and a guide tube in the middle that can guide the cylindrical punch to fall
——A ring that can adjust the rise and reset of the falling punch
Place the sample under the punch and secure
Raise the punch to a preset height and drop it
Observe sample damage visually or with a magnifying glass
Adjust the drop weight and height of the impact tester to get the exact failure point or set the pass/fail scale
The calculation formula of impact strength is as follows:
Drop height × punch weight = impact force
ISO 6272 Paints and varnishes Rapid deformation (impact resistance) test
ASTM D 2794 Test Method for Resistance of Organic Coatings to Rapid Deformation (Impact) Actions