ISO 180 specifies a method for determining the impact strength or impact resistance of a plastic specimen with an Izod test. Izod impact strength testing involves the use of a pendulum to break a test specimen being supported in a cantilever configuration. The impact energy absorbed in impacting a plastic specimen in an Izod test is taken as being equal to the difference between the potential energy of the pendulum and the energy remaining in the pendulum after impacting the plastic specimen. Corrections accounting for friction and air-resistance losses must also be made to determine the true impact resistance of the plastic.

Specimens tested to determine the impact strength through the Izod impact resistance test and the practices of ISO 180 can be either unnotched or notched. Izod impact testing of notched specimens in accordance to ISO 180 is a common test to determine notch sensitivity of a plastic material. Test machines that are used to perform Izod impact strength tests in accordance to ISO 180 must meet the requirements of ISO 13802; verification of Izod pendulum impact testing machines.

By means of our testing expertise and modular product design, we will help find the solution that is right for you. Give our test engineers a call today for help configuring the best test machine and accessories according to ISO 180.

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