ISO D=4-4.9 D=5-5.9 D=6-7.9 D=8-9.9 D=10-11.9 D=12-13.9 D=14-15.9 D=16-19.9 D=20-25.9 D=26-32.9 INDEXABLE DRILLS USER GUIDE Material Groups Recommended Machining Conditions SUMOCHAM Feed vs. Drill Diameter Material Condition TensileStrength[N/mm2]HardnessHBMaterialNo.(1)V m/min mm/rev < 0.25 %C Annealed 420 125 1 80-110-140 ≥ 0.25 %C Annealed 650 190 2 80-105-130 Non-alloysteel and caststeel, free< 0.55 %CQuenched andtempered850 250cutting steelAnnealed750220380-100-1200.040.07 0.09 0.12 0.15 0.18 0.20 0.25 0.25 0.300.06 0.09 0.11 0.17 0.21 0.24 0.27 0.35 0.35 0.40470-90-1100.080.110.130.220.280.300.350.450.450.50 ≥ 0.55 %C Quenched andtempered1000 300 5 50-70-90 Annealed 600 200 6 80-100-120 P Low alloy and caststeel (less than 5% ofalloying elements)930 275 7 70-90-110 0.04 0.07 0.09 0.12 0.14 0.16 0.18 0.23 0.25 0.30Quenched andtempered1000300850-70-900.06 0.09 0.12 0.18 0.21 0.24 0.26 0.31 0.35 0.400.080.110.150.250.280.320.350.400.450.50 1200 350 9 40-55-70 High alloyed steel, caststeel and tool steelAnnealed680 200 10 50-70-90 0.06 0.07 0.09 0.12 0.12 0.15 0.18 0.20 0.22 0.25Quenched andtempered11003251140-60-800.07 0.09 0.11 0.16 0.17 0.20 0.23 0.25 0.27 0.300.080.100.120.200.220.250.280.300.330.35 Ferritic/Stainless steel and cast steelmartensitic68020012 0.05 0.06 0.08 0.11 0.11 0.14 0.17 0.22 0.21 0.2440-55-700.06 0.07 0.10 0.15 0.16 0.19 0.22 0.24 0.26 0.29 Martensitic 820 240 13 0.07 0.08 0.11 0.19 0.21 0.24 0.27 0.29 0.32 0.34 Ferritic /Gray cast iron (GG)pearliticPearlitic /martensitic1801590-125-1602601680-110-1400.040.100.120.150.20 0.25 0.30 0.35 0.35 0.40 K Nodular cast iron (GGG) FerriticPearlitic 160 17 90-135-180 0.06 0.08 0.13 0.15 0.15 0.18 0.22 0.30 0.27 0.35 0.32 0.40 0.37 0.45 0.45 0.55 0.47 0.60 0.50 0.602501880-110-140 Ferritic 130 19 90-125-160 Malleable cast iron Pearlitic 230 20 80-110-140 Recommended cutting data (1) For workpiece materials list, see pages 495-524 . As a starting value, the middle of the recommended machining range should be used. Then, according to the wear results, conditions can be changed to optimize performance. The data refers to IC908 • When using external coolant supply only, reduce cutting speed by 10% • When using more than 5XD drill ratio, reduce cutting parameters by 10% No need to reduce the cutting parameters while using 8XD and up holders 73