Page 149 - Demo

147GENERAL PURPOSE DRILLINGRecommended Machining Conditions for Solid Carbide Drills D3.0-20.0 mm ISOMaterial ConditionTensile Strength [N/mm2]Hardness HBMaterial No.(1)Cutting Speed Vcm/minFeed (mm/rev) vs. Drill Diameter%u00d83-5 %u00d85.1-8 %u00d88.1-12 %u00d812.1-16 %u00d816.1-20Pnon-alloy steel and cast steel, free cutting steel<0.25% C annealed 420 125 1 80-120 0.10-0.18 0.15-0.25 0.2-0.30 0.20-0.35 0.25-0.40%u22650.25% C annealed 650 190 2 80-110 0.10-0.18 0.15-0.25 0.2-0.30 0.20-0.35 0.25-0.40<0.55% C quenched and tempered 850 250 3 70-1000.10-0.20 0.15-0.28 0.2-0.35 0.20-0.38 0.25-0.42%u22650.55% Cannealed 750 220 4quenched and tempered 1000 300 5low alloy and cast steel (less than 5% of alloying elements)annealed 600 200 6 70-90 0.10-0.18 0.15-0.25 0.2-0.30 0.20-0.35 0.25-0.40quenched and tempered930 275 71000 300 8 60-80 0.10-0.18 0.15-0.25 0.2-0.30 0.20-0.35 0.25-0.401200 350 9 50-70 0.10-0.20 0.15-0.28 0.2-0.35 0.20-0.38 0.25-0.42high alloyed steel, cast steel and tool steelannealed 680 200 10 60-80 0.10-0.20 0.15-0.28 0.18-0.35 0.20-0.38 0.25-0.42quenched and tempered 1100 325 11 50-70 0.10-0.15 0.12-0.20 0.14-0.25 0.16-0.30 0.18-0.32stainless steel and cast steelferritic / martensitic 680 200 12 25-75 0.04-0.10 0.05-0.15 0.05-0.18 0.08-0.20 0.10-0.20martensitic 820 240 13 25-75 0.04-0.10 0.05-0.15 0.05-0.18 0.08-0.20 0.10-0.20M stainless steel and cast steelaustenitic, duplex 600 180 14 25-75 0.04-0.10 0.05-0.15 0.05-0.18 0.08-0.20 0.10-0.20Kgray cast iron (GG) ferritic / pearlitic 180 15 85-105 0.15-0.25 0.20-0.35 0.25-0.45 0.30-0.50 0.35-0.55pearlitic / martensitic 260 16 75-90 0.15-0.25 0.20-0.35 0.25-0.45 0.30-0.50 0.35-0.55nodular cast iron (GGG) ferritic 160 1765-80 0.12-0.20 0.15-0.25 0.20-0.35 0.25-0.40 0.30-0.45 pearlitic 250 18malleable cast iron ferritic 130 19pearlitic 230 20Naluminumwrought alloysnot hardenable 60 21 70-300 0.10-0.25 0.15-0.35 0.25-0.45 0.30-0.50 0.35-0.55hardenable 100 22 70-200aluminumcast alloys%u226412% Sinot hardenable 75 23 70-300 0.07-0.18 0.12-0.25 0.20-0.35 0.25-0.45 0.30-0.50hardenable 90 24>12% Si high temperature 130 25copper alloys>1% Pb free cutting 110 26brass 90 27electrolytic copper100 28non metallicduroplastics, fiber plastics 70 Shore D 29hard rubber 55 Shore D 30Shigh temperature alloysFe based annealed 200 31hardened 280 32Ni or Co basedannealed 250 33hardened 350 34cast 320 35titanium alloyspure 400 190 36alpha+beta alloys, hardened1050 310 37 15-35 0.02-0.07 0.04-0.10 0.06-0.12 0.08-0.15 0.08-0.18Hhardened steel hardened 55 HRC 38 40-70 0.06-0.10 0.08-0.12 0.10-0.14 0.12-0.16 0.14-0.18hardened 60 HRC 39chilled cast iron cast 400 40cast iron hardened 55 HRC 41As a starting value, the middle of the recommended machining range should be used, then (according to wear results), conditions can be changed in order to optimize performance.%u2022 When using external coolant supply only, reduce cutting speed by 10%%u2022 Use internal coolant supply when machining austenitic stainless steel