Impact Testers provide a method for evaluating the impact resistance
of a coating to cracking and peeling from a substrate when it is subjected to a
deformation caused by a falling weight. Both the coated or uncoated side of a
panel can be tested to simulate indentation or bulging.
Impact Testers have gained wide acceptance in testing the impact
resistance of many types of coatings including paints, varnishes, plastic and
laminates. They have also been also been widely used to establish quality
control standards for resistance to impact surface damage and penetration of
materials such as plastics, resins, fiberglass, sheet metals and plywood.
The tester consists of a solid base stand with a guide tube support. The
guide tube has a slot that directs the weight and includes graduations to
facilitate reading where the weight is dropped. The weights have build-in steel
balls that provide different geometrical configurations, and the base of the
instrument includes a die support.
A specimen is placed over a hole in a die mounted in the anvil. The punch is
placed upon the specimen. The weight is raised to the desired height in the
guide tube and released. Damage to the sample is usually evaluated visually or
with low power magnification.
Light-Duty Impact Tester – Model IG-1115
English Scale (max force of 28 inch-lbs). Evaluate materials that can be damaged
or penetrated by small impact forces through normal use, such as products mildly
abused in households, offices or labs.
Heavy Duty Impact Tester - Model IG-1120 [part# 128323]
English Scale (max force of 80 and 160 inch-lbs)
Heavy Duty Impact Tester - Model IG-1121 [part# 128324]
Metric Scale (max force of 100 and 200 kg-cm). This impact tester has gained
wide acceptance in testing the impact resistance of many types of coatings,
including paints, varnishes, plated, plastic or laminated coatings. It is widely
used to establish quality control standards for resistance to impact surface
damage and penetration of many construction materials including plastics,
resins, fiberglass, sheet metals, and plywood.
SPI Modified* Impact Tester - Model IG-1140 [part# 128325]
English Scale (max force of 320 inch-pounds). This impact tester was developed
in cooperation with the Society of the Plastics Industry for evaluating impact
resistance of rigid sheets of PVC (30 – 60 mils thick) and other materials
exceeding the 160 inch-lb limit of the Heavy-Duty Impact Tester.