CC6190 new ceramic insert grade for Sandvik Coromant's CoroMill 490.
CC6190 new ceramic insert grade for Sandvik Coromant's CoroMill 490.

It is suitable for applications including the milling of engine components such as valve bodies, crankshafts and gearbox housings, Sandvik Coromant says.

CC6190 reportedly has two-three times higher productivity than cemented carbide grades. It is aimed at the medium-to-light roughing of grey cast iron components, as well as nodular cast iron and compacted graphite iron (CGI) parts.

In finishing trials on a valve body made from SS0125 cast iron, quality requirements included a surface finish of 1.0 Ra and flatness of 0.03 mm. At identical cutting data, CoroMill 490 with CC6190 inserts achieved 40% greater tool life over a comparable competitor tool. Similarly, another test showed a 20% boost in tool life when roughing a workpiece manufactured from GG25 grey cast iron.