This part of ISO 9361 specifies the dimensions of indexable ceramic inserts with rounded corners, with cylindrical fixing hole, with 0°normal clearance. These inserts are primarily intended to be mounted by top and hole, or hole alone, clamping on turning and boring tools.
Ceramic cutting materials consist of a variety of ox-ides, nitrides and carbides. In contrast with hardmetals (including cermets) ceramics do not have a metallic binding matrix. Such ceramic ma-terials are, for example, oxide ceramics (consisting primarily of aluminium oxide Al2O3), carboxide cer-amics (consisting generally of a mixture of alu-minium oxide and other materials such as titanium carbide TiC) and nitride ceramics (consisting gen-erally of a mixture of silicon nitride and other ma-terials, such as yttrium oxide Y2O3 and aluminium oxide).