This part of EN ISO 148-3 covers the requirements, preparation and methods of qualification of test pieces used for indirect verification of pendulum impact testing machines according to EN ISO 148-2.
Specifies notched test pieces with the same nominal dimensions as those specified in ISO 148-1; however, the tolerances are more stringent.
Chemical composition or heat treatment or both vary with the desired energy level.
Reference test pieces are qualified in reference pendulum impact testing machines also described in this part of ISO 148.
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