INDEXABLE DRILLS ISO Hardness HB Material No.(1) 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 USER GUIDE Material Groups Recommended Machining Conditions SUMOCHAM Feed vs. Drill Diameter Tensile Strength Material Condition [N/mm2] 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 cast< 0.55 %Csteel, freeQuenched andtemperedcutting steelAnnealed8502503 80-100-120 0.04 0.06 0.07 0.09 0.09 0.11 0.12 0.17 0.15 0.21 0.18 0.24 0.20 0.27 0.25 0.35 0.25 0.35 0.30 0.40750220470-90-1100.080.110.130.220.280.300.350.450.450.50 ≥ 0.55 %C Quenched andtempered 1000 300 5 50-70-90 Annealed 600 200 6 80-100-120 P Low alloy and cast 930 275 7 70-90-110 0.04 0.07 0.09 0.12 0.14 0.16 0.18 0.23 0.25 0.30 steel (less than 5% ofalloying elements)Quenched andtempered 0.06 0.10 0.12 0.18 0.21 0.24 0.26 0.31 0.35 0.401000300850-70-900.080.130.150.250.280.320.350.400.450.50 1200 350 9 40-55-70 High alloyed steel, caststeel and tool steelAnnealed 680 200 10 50-70-90 0.06 0.07 0.09 0.12 0.12 0.15 0.18 0.20 0.22 0.25Quenched andtempered0.07 0.09 0.11 0.16 0.17 0.20 0.23 0.25 0.27 0.3011003251140-60-800.080.100.120.200.220.250.280.300.330.35 Stainless steeland cast steel Ferritic/martensitic 680 200 12 40-55-70 0.05 0.06 0.08 0.10 0.12 0.14 0.16 0.16 0.18 0.200.06 0.07 0.09 0.12 0.15 0.17 0.20 0.21 0.24 0.27Martensitic8202401340-55-700.070.080.100.150.180.200.240.260.300.35 M Stainless steeland cast steel 0.05 0.06 0.08 0.10 0.12 0.14 0.16 0.16 0.18 0.20Austenitic, duplex6001801430-50-700.06 0.07 0.09 0.12 0.15 0.17 0.20 0.21 0.24 0.270.070.080.100.150.180.200.240.260.300.35 Ferritic / pearlitic 180 15 90-125-160 Gray cast iron (GG) Pearlitic / martensitic 260 16 80-110-140 Ferritic 160 17 90-135-180 0.04 0.10 0.12 0.15 0.20 0.25 0.30 0.35 0.35 0.40 K Nodular cast iron (GGG) 0.06 0.13 0.15 0.22 0.27 0.32 0.37 0.45 0.47 0.50 Pearlitic 250 18 80-110-140 0.08 0.15 0.18 0.30 0.35 0.40 0.45 0.55 0.60 0.60 Ferritic 130 19 90-125-160 Malleable cast iron Pearlitic 230 20 80-110-140 Not hardenable 60 21 Aluminum-wrought alloys Hardenable 100 22 90-155-220 ≤12% Si Not hardenable 75 23 Aluminum-cast alloys Hardenable 90 24 0.20 0.25 0.30 0.35 0.40 0.45 0.500.27 0.32 0.37 0.42 0.50 0.57 0.67 >12% Si High temperature 130 25 80-120-160 0.35 0.40 0.45 0.50 0.60 0.70 0.75 N >1% Pb Free cutting 110 26 Copper alloys Brass 90 27 90-155-220 Electrolytic copper 100 28 Duroplastics,Non metallicfiber plastics 29 Hard rubber 30 Annealed 200 31 30-45-60 Fe based High Hardened 280 32 0.05 0.06 0.08 0.10 0.12 0.12 0.14 0.16 temperature Annealed 250 33 0.06 0.08 0.10 0.12 0.15 0.16 0.18 0.20 alloysS Ni or Cobased HardenedCast 20-35-5035034 0.07 0.11 0.13 0.15 0.18 0.20 0.22 0.2532035 Pure 400 36 0.05 0.06 0.08 0.10 0.12 0.14 0.16 0.18 Titanium alloys Alpha+beta alloys,hardened1050 20-35-5037 0.06 0.09 0.11 0.14 0.16 0.18 0.20 0.220.070.120.150.180.200.22 0.25 0.27 Hardened 55 HRC 38 0.05 0.06 0.08 0.10 0.12 0.14 0.16 0.18 H Hardened steel 20-35-50 0.06 0.09 0.11 0.14 0.16 0.18 0.20 0.22 Hardened 60 HRC 39 0.07 0.12 0.15 0.18 0.20 0.22 0.25 0.27 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% • Use internal coolant supply when machining austenitic stainless steel • When using more than 5XD drill ratio, reduce cutting parameters by 10% 72 ISCAR