This guide covers standard specification for the details of impact testing apparatus, test specimens, and procedures for cast iron, including gray iron, white iron, malleable iron, ductile iron, and austempered ductile iron, but not including chilled rolls or rolls with white iron skins. The Charpy-type impact test shall be employed for testing gray and white irons. The single-blow Charpy impact test for gray and white irons shall be carried out in a pendulum-type impact machine. The test specimens shall have a plain cylindrical form, machined or ground to a smooth finish and shall conform to the specified values of diameter, length, and span. The standard notch Charpy bar impact test specimen shall be employed. Characterization of the fracture toughness of any cast iron should be based upon testing three specimens.

This guide covers standard specification for the details of impact testing apparatus, test specimens, and procedures for cast iron, including gray iron, white iron, malleable iron, ductile iron, and austempered ductile iron, but not including chilled rolls or rolls with white iron skins. The Charpy-type impact test shall be employed for testing gray and white irons. The single-blow Charpy impact test for gray and white irons shall be carried out in a pendulum-type impact machine. The test specimens shall have a plain cylindrical form, machined or ground to a smooth finish and shall conform to the specified values of diameter, length, and span. The standard notch Charpy bar impact test specimen shall be employed. Characterization of the fracture toughness of any cast iron should be based upon testing three specimens.