Izod impact strength test

Izod impact strength is an ASTM standard method of determining impact strength. A notched sample is generally used to determine impact strength.

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An arm held at a specific height (constant potential energy) is released. The arm hits the sample and breaks it. From the energy absorbed by the sample, its impact strength is determined.

This test can also be used to determine the notch sensitivity.

See also

• Charpy impact test
• Impact force