Table 2. Types of test specimen and nomenclature

	Thread (thread + tip, T)			Shank (shank + shank cutter, S)
STS diameter	8 mm	10 mm	12 mm	8 mm	10 mm
cross section	PL8T	PL10T	PL12T	PL8S	PL10S
Radial section	PR8T	PR10T	PR12T	PR8S	PR10S
Tangential section	PT8T	PT10T	PT12T	PT8S	PT10S

PL: specimen of the cross section, PR: specimen of the radial section, PT: specimen of the tangential sections.