Page 131 - Demo

129GENERAL PURPOSE DRILLINGCombo Drills Exchangeable Heads and Indexable Insert Drills Cutting ConditionsCOMBI-CHAM ISOMaterial Condition Tensile Strength [N/mm2] Hardness HB Material Group No.Cutting Speed Vc[m/min]Feed vs. Drill Diameter F [mm/rev]26< %u00d8D <2829< %u00d8D <3233< %u00d8D <3536< %u00d8D <4344< %u00d8D <50VcminVcmax f min f max f min f max f min f max f min f max f min f maxPnon-alloy steel and cast steel, free cutting steel<0.25% C annealed 420 125 1 120 2000.25 0.35 0.25 0.35 0.25 0.40 0.25 0.40 0.28 0.45%u22650.25% C annealed 650 190 2<0.55% C quenched and tempered 850 250 3130 190%u22650.55% Cannealed 750 220 4quenched and tempered 1000 300 5low alloy and cast steel (less than 5% of alloying elements)annealed 600 200 6quenched and 120 180 0.25 0.33 0.25 0.33 0.25 0.38 0.25 0.38 0.26 0.43tempered930 275 71000 300 81200 350 9high alloyed steel, cast steel and tool steelannealed 680 200 10quenched and 100 160 0.25 0.33 0.25 0.33 0.25 0.36 0.25 0.36 0.26 0.41tempered 1100 325 11stainless steel and cast steelferritic / martensitic 680 200 12 90 140 0.12 0.24 0.12 0.24 0.16 0.25 0.18 0.25 0.18 0.30martensitic 820 240 13M stainless steel and cast steel austenitic, duplex 600 180 14 90 140 0.12 0.24 0.12 0.24 0.16 0.25 0.18 0.25 0.18 0.30Kgray cast iron (GG) ferritic / pearlitic 180 15150 250 0.25 0.40 0.25 0.45 0.3 0.50 0.3 0.50 0.35 0.55pearlitic / martensitic 260 16nodular cast iron (GGG) ferritic 160 17pearlitic 250 18malleable cast iron ferritic 130 19pearlitic 230 20Naluminumwrought alloysnot hardenable 60 21160 260 0.3 0.50 0.3 0.50 0.35 0.55 0.35 0.55 0.4 0.60hardenable 100 22aluminumcast alloys%u226412% Si not hardenable 75 23hardenable 90 24>12% Si high temperature 130 25copper alloys>1% Pb free cutting 110 26brass 90 27electrolytic copper100 28non metallicduroplastics, fiber plastics70 Shore D 29hard rubber 55 Shore D 30Shigh temperature alloysFe based annealed 200 31 30 600.1 0.16 0.1 0.18 0.15 0.20 0.15 0.22 0.16 0.24hardened 280 3220 50Ni or Co basedannealed 250 33hardened 350 34cast 320 35titanium alloyspure 400 190 36alpha+beta alloys, hardened 1050 310 37Hhardened steel hardened 55 HRC 38 20 50 0.1 0.16 0.12 0.18 0.14 0.2 0.14 0.2 0.16 0.22 hardened 60 HRC 39chilled cast iron cast 400 40cast iron hardened 55 HRC 41