This second edition cancels and replaces the first edition (i.e. ISO 3327:1975). Is applicable to hardmetals of negligible ductility. If it is used for hardmetals showing significant plastic deformation before breaking, incorrect results may be obtained. In such instances, the method may be used for comparison purposes only. Gives symbols and designations in table 1, dimensions of test pieces in table 2, and values of chamfer correction factor in table 3.