MILLING INSERTS ISO USER GUIDE Cutting Speed Recommendations for Indexable Milling Cutters CUTTING SPEED Vc (m/min) COATED Tensile Material Strength Hardness Group IC330/ IC808/ IC810/ IC830/ Material Condition [N/mm2] HB No. (1) 328 IC380 908 910 928 IC840 IC845 IC882 < 0.25 %C Annealed 420 125 1 140-200 210-300 190-260 150-240 130-220 Non-alloy >= 0.25 %C Annealed 650 190 2 130-190 200-280 170-240 140-230 120-200 steel andcast steel,< 0.55 %C Quenchedand tempered850 250 3 130-190 200-260 160-230 140-230 120-190 free cutting Annealed 750 220 4 120-180 180-250 140-220 130-220 120-180 steel >= 0.55 %C Quenchedand tempered1000 300 5 120-170 180-240 140-210 130-200 110-180 Annealed 600 200 6 120-160 170-240 130-210 120-190 100-170 P Low alloy and caststeel (less than 5% ofalloying elements)Quenchedand tempered93010002753007110-1508100-140160-230120-200120-170 100-160150-230110-200110-170100-150 1200 350 9 90-150 140-220 100-190 100-160 90-150 Annealed 680 200 10 80-130 120-210 90-180 90-150 80-140 High alloyed steel, cast steel and tool steel Quenchedand tempered1100 325 11 80-120 110-170 80-160 90-140 80-130 Stainless steeland cast steel Ferritic/martensitic680 200 12 100-140 150-230 110-160 110-160Martensitic8202401390-130140-220100-150100-150 M Stainless steeland cast steel Austenitic,duplex 600 180 14 80-120 100-160 100-150 90-160 70-140 Ferritic/Grey cast iron (GG)pearlitic18015 220-320 Pearlitic /martensitic 260 16 200-300 K Ferritic 160 17 180-250 Cast iron nodular (GGG) Pearlitic 250 18 160-220 Malleable cast iron Ferritic 130 19 200-300 Pearlitic 230 20 170-280 Aluminum Not cureable 60 21 wrought alloys Cured 100 22 Aluminum <=12% Si Not cureableCured 75 239024 cast alloys >12% Si Hightemperature 130 25 N >1% Pb Free cutting 110 26 Copper Brass 90 27 alloys Electrolyticcopper 100 28 Duroplastics,Non metallicfiber plastics29 Hard rubber 30 Annealed 200 31 35-50 45-55 50-60 35-55 40-55 35-50 Fe based Cured 280 32 30-40 35-45 40-50 30-45 30-45 30-40 High temp.alloysNi or CoSbased AnnealedCured 250 33 25-35 30-45 35-50 30-45 30-40 25-353503420-2525-3525-3525-3525-3020-25 Cast 320 35 25-30 30-35 30-40 30-35 30-35 25-30 Pure Rm = 400 36 45-80 55-100 65-110 50-90 50-90 45-80 Titanium alloys Alpha+betaalloys curedRm = 1050 37 30-65 35-65 35-70 30-65 30-60 30-65 Hardened 55 HRC 38 60-80 55-75 Hardened steelHChilled cast ironHardenedCast 60 HRC 39 50-70 45-6540040100-11090-105 Cast iron Hardened 55 HRC 41 60-80 55-75 Rm - ultimate tensile strength, MPa (1) For ISCAR material group numbers and workpiece material list, see pages 728-757 542 ISCAR