This International Standard specifies a method of instrumented Charpy V-notch pendulum impact testing on metallic materials and the requirements concerning the measurement and recording equipment. With respect to the Charpy pendulum impact test described in ISO 148-1, this test provides further information on the fracture behaviour of the product under impact testing conditions. The results of instrumented Charpy test analyses are not directly transferable to structures or components, and shall not be directly used in design calculations or safety assessments. General information about instrumented impact testing can be found in Reference [1] to Reference [5].