® Swiss-Line G6 Inserts Carbide Grades BLU PVD triple layer coated Sub-Micron grade for Steel, Stainless Steels, Titanium and hard materials. K20 Uncoated Sub-Micron carbide grade for Aluminum and non-ferrous materials, Stainless Steels and Titanium. Cutting Data Cutting Speed ISOStandard Material m/minK20 BLU Low and Medium Carbon Steels <0.55%C - 80-150 P High Carbon Steels ≥0.55%C - 70-120 Alloy Steels,Treated Steels - 40-80 Stainless Steel-Free Cutting 30-80 60-120 M Stainless Steel-Austenitic 20-70 30-90 Cast Steels 30-80 50-120 K Cast Iron 50-120 60-130 Aluminum ≤12%Si, Copper 120-250 - N Aluminum >12%Si 90-200 - Synthetics, Duroplastics, Thermoplastics 70-150 - S Nickel Alloys, Titanium Alloys. 20-50 30-70 H Hardened Steel, ≤45 HRc - 20-50 A08-40