AS 1544.5 pdf download – Methods for impact tests on metals Part 5: Assessment of fracture surface appearance of steel 4METHODS FOR DETERMINATION OF PERCENTAGE CRYSTALLINITY AND FIBROSITY 4.1 Methods and accuracy4.1.1 General The fracture surface of the Charpy and Izod test pieces is often rated by the percentage ofshear fracture that has occurred.The greater the percentage of shear fracture,...