Impact resistance testing, such as Charpy and Izod impact tests, measures the amount of energy absorbed by a material during fracture. The test involves striking a notched or V-notch specimen with a pendulum hammer and measuring the amount of energy absorbed by the specimen during fracture. The energy absorbed indicates the material's ability to resist fracture and absorb impact forces.

Charpy impact testing is widely employed in various industries, including manufacturing, construction, and engineering, to assess the behavior of materials under sudden loading conditions. Testing is often performed at various temperatures to determine the ductile to brittle transformation temperature.

Since the occurrence of flaws is typically not avoidable, fracture toughness is an important material property. Flaws, such as cracks, voids, inclusions, weld defects or material folds may act as stress concentrators to initial a subsurface crack. Charpy impact testing is valuable in determining whether there is a danger of catastrophic failure when a material is impacted.

Charpy impact testing is commonly used for quality control, material selection, and comparing the impact resistance of different materials. It provides valuable information for assessing material suitability in various applications, such as structural components, piping, automotive parts, and safety equipment.



Automated and instrumented Charpy Impact Testing makes all the difference.


  • Temperature between -40° F and +500° F

  • Charpy Impact Testing

  • Izod Impact Testing


  • ASTM E23 - Notched Bar Impact Testing of Metallics