TurningMillingDrillingTechnicalInformationIndex Machining group General turning Recommended cutting data A Turning insert, positive Starting values for cutting speed vc [m/min] HC (CVD) Brinell Material group Composition / structure / heat treatment hardness YB6315 YBC152 YBC252 HB Feed rate [mm] Feed rate [mm] Feed rate [mm] 0,1 0,2 0,4 0,1 0,2 0,4 0,1 0,3 0,6 approx. 0,15 % C annealed 125 1 450 390 270 450 390 270 430 350 230 approx. 0,45 % C annealed 190 2 380 330 230 380 330 230 360 295 190 Unalloyed steel approx. 0,45 % C tempered 250 3 300 265 200 300 265 200 280 235 160 approx. 0,75 % C annealed 270 4 290 255 190 290 255 190 270 225 150 approx. 0,75 % C tempered 300 5 250 225 170 250 225 170 235 195 130 P annealed 180 6 360 300 180 360 300 180 340 270 170 B Low-alloyed steel tempered 275 7 250 210 150 250 210 150 235 195 140tempered3008230200150230200150220180140 tempered 350 9 200 170 120 200 170 120 190 155 110 High-alloyed steel and high-alloyed annealed 200 10 320 275 190 320 275 190 280 230 170 tool steel hardened and tempered 325 11 160 150 130 160 150 130 130 115 100 ferritic/martensitic annealed 200 12 M Stainless steel martensitic tempered 240 13 austenitic quench hardened 180 14 austenitic-ferritic 230 15 perlitic/ferritic 180 16 Grey cast iron perlitic (martensitic) 260 17 K Cast iron with spheroidal graphite ferritic 160 18 perlitic 250 19 C Malleable cast iron ferritic 130 20 perlitic 230 21 cannot be hardened 60 22 Aluminium wrought alloys hardenable hardened 100 23 ≤ 12 % Si, cannot be hardened 75 24 N Cast aluminium alloys ≤ 12 % Si, hardenable hardened 90 25 > 12 % Si, cannot be hardened 130 26 machining steel, PB> 1% 110 27 Copper and copper alloys(bronze/brass)CuZn, CuSnZn 90 28 CuSn, Pb-free copper, electrolytic copper 100 29 annealed 200 30 Fe-based alloys hardened 280 31 D Heat-resistant alloysS Ni or Co bass annealedhardened 250 3235033 cast 320 34 pure titanium Rm 400 35 Titanium alloys α and β alloys hardened Rm 1050 36 hardened and tempered 55 HRC 37 Hardened steel H hardened and tempered 60 HRC 38 Hard cast iron cast 400 39 Hardened cast iron hardened and tempered 55 HRC 40 Thermoplasts 41 Thermosetting plastics 42 X Non-metallic materials Plastic, glass-fibre reinforced GFRP 43 Plastic, carbon fibre reinforced CFRP 44 E Graphite 45 Wood 46 Note: The given cutting values are guide values, which were determined under ideal conditions. The values have to be adapted in individual cases. For examples of material for cutting tool groups view page D22. A 330