Sandvik Coromant's GC4205 insert grade is designed to provide increased speeds, high metal removal rates and process stability in steel turning applications.

The insert grade offers an extended performance range, from roughing to medium-finishing and semi-finishing and excels in applications where high cutting temperatures are generated. The insert grade provides a new option for turning hard materials (HB>270). The advances made by GC4205 allow cutting speeds of greater than 800 ft./min., high metal removal rates and extended time in the cut. When used in applications with high cutting data, the insert grade produces as much as 30 percent more parts than previous grades, because of improved crater wear and plastic deformation resistance, the company says.