TurningMillingDrillingTechnicalInformationIndex Machining group Indexable milling Recommended cutting data A Indexable milling – group 3 (FMR01/02/03/04) Starting values for cutting speed vc [m/min] HC (CVD) Material group Composition / structure / heat treatment HB YBC302 YBC401 ae / D ae / D 1/1 | 3/4 1/5 1/20 1/1 | 3/4 1/5 1/20 approx. 0,15 % C annealed 125 1 260 300 390 225 260 340 approx. 0,45 % C annealed 190 2 225 255 335 195 225 295 Unalloyed steel approx. 0,45 % C tempered 250 3 210 240 315 180 210 275 approx. 0,75 % C annealed 270 4 185 210 275 160 185 245 approx. 0,75 % C tempered 300 5 170 195 255 150 170 225 P annealed 180 6 225 255 335 195 225 295 B Low-alloyed steel tempered 275 7 185 210 275 160 185 245tempered3008170195255150170225 tempered 350 9 145 165 215 125 145 190 High-alloyed steel and high-alloyed annealed 200 10 130 150 195 115 130 170 tool steel hardened and tempered 325 11 95 105 140 80 95 125 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 steel hardened and tempered 55 HRC 37 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. Feed rate recommendations on page B248. For examples of material for cutting tool groups view page D22. B 232