INTERRUPTED CUTTING OF HARDENED STEELS

Sumitomo's new PcBN premium grade BNC300 features a ceramic-based coating and machines hardened steels with interrupted cuts. The BNC300's tough PcBN substrate, combined with a TiAIN ceramic gold coating, result in extended tool life in interrupted turning applications.

The cutting edge of the BNC300 is further strengthened through the incorporation of Sumitomo's new brazing technology. All corners are brazed individually. This line of BNC grades also includes the BNC80 for excellent surface finishes, the BNC150 for high-speed continuous cutting and the BNC200 for general and mild interrupted cutting. www.sumicarbide.com