Selection guide Inserts grades Machining conditions HRSA HRSA Ti Good Average Difficult Good Average Difficult Main grades GC1125/GC1225: PVD-coated H13A: Good wear resistance and first-choice grades for all parting, toughness combined with edge grooving and turning operations in sharpness. To be used on non-ferrous good conditions. The grades work well and titanium materials. on low-carbon and other smearing materials. Superior flank wear resistance and edge line toughness at medium cutting speeds. S205: A wear resistant CVD-coated grade for high-speed finishing in the cutting speed range between legacy GC1135: CVD-coated grade for tough carbide grades and CBN grades. and demanding operations such as parting-off to centre and interrupted cuts. Low to medium cutting speeds. GC1105/GC1205: PVD-coated carbide GC1145: The safest grade choice for grades with good adhesion and flank parting-off in fair to unstable condi- wear resistance. The combination of tions at low speeds. Works well when hard substrate and coating allows combined with High Precision Coolant significant increases in cutting speed. (HPC) at medium speeds (reduced temperature). GC4425: Excellent combination of high wear resistance and good edge security. To be used in grooving, turning and parting off operations under stable conditions at medium to high cutting speeds. CT5015: A titanium-based uncoated grade with excellent resistance to oxidation and smearing. For high-quality surface finishes when grooving low-alloyed steels under fairly good conditions. Moderate cutting speeds and feeds. GC3115: A highly wear-resistant grade for grooving and turning applications under stable conditions. Also effective in hard steels. High cutting speeds. 8