METRIC Combined Drill & Countersink Series Diameter (D1) 301M Vc (mm) Metric Hardness (m/min) 1 1.6 2.5 4 5 ≤ 220 Bhn 12 RPM 1231 969 616 388 310 or (10-15) Fr 0.009 0.011 0.018 0.028 0.035 ≤ 19 HRc Feed (mm/min) 11 11 11 11 11 SUPER ALLOYS 8 RPM 769 606 385 242 194 (NICKEL, COBALT, ≤ 320 Bhn IRON BASE) or Fr 0.008 0.010 0.016 0.025 0.031 Inconel 601, 617, 625, ≤ 34 HRc (6-9) Incoloy 800, Monel 400, Feed (mm/min) 6 6 6 6 6 Rene, Waspaloy 6 RPM 616 485 308 194 155 ≤ 425 Bhn or (5-7) Fr 0.003 0.004 0.006 0.010 0.013 ≤ 45 HRc Feed (mm/min) 2 2 2 2 2 S 26 RPM 2616 2060 1308 824 659 ≤ 275 Bhn or (21-31) Fr 0.016 0.020 0.032 0.051 0.064 ≤ 28 HRc Feed (mm/min) 42 42 42 42 42 TITANIUM ALLOYS 20 RPM 2000 1575 1000 630 504 Pure Titanium, Ti6Al4V, ≤ 350 Bhn Ti6Al2Sn4Zr2Mo, or (16-24) Fr 0.009 0.011 0.018 0.029 0.036 Ti4Al4Mo2Sn0.5Si, ≤ 38 HRc Feed (mm/min) 18 18 18 18 18 Ti-6Al4V ≤ 440 Bhn 17 RPM 1693 1333 846 533 427 or (13-20) Fr 0.008 0.011 0.017 0.026 0.033 ≤ 47 HRc Feed (mm/min) 14 14 14 14 14 ≤ 80 Bhn 165 RPM 16619 13087 8309 5235 4188 or (132-198) Fr 0.025 0.032 0.050 0.079 0.099 ALUMINUM ALLOYS ≤ 47 HRb Feed (mm/min) 415 415 415 415 415 2017, 2024, 356, 139 RPM 14003 11027 7001 4411 3529 6061, 7075 ≤ 150 Bhn or (111-166) Fr 0.025 0.032 0.050 0.079 0.099 ≤ 7 HRc Feed (mm/min) 350 350 350 350 350 ≤ 140 Bhn 58 RPM 5847 4605 2924 1842 1474 N or (46-69) Fr 0.012 0.015 0.024 0.038 0.048 COPPER ALLOYS ≤ 3 HRc Feed (mm/min) 70 70 70 70 70 Alum Bronze, C110, 53 RPM 5386 4241 2693 1696 1357 Muntz Brass ≤ 200 Bhn or (43-64) Fr 0.012 0.015 0.024 0.038 0.048 ≤ 23 HRc Feed (mm/min) 65 65 65 65 65 152 RPM 15388 12118 7694 4847 3878 PLASTICS Fr 0.025 0.032 0.050 0.079 0.099 Polycarbonate, PVC (122-183) Feed (mm/min) 385 385 385 385 385 Bhn (Brinell) HRc (Rockwell C) HRb (Rockwell B) rpm = (Vc x 1000) / (D1 x 3.14) mm/min = Fr x rpm reduce speed and feed 30 percent when using uncoated drills reduce speed and feed for materials harder than listed refer to the KYOCERA SGS Tool Wizard® for complete technical information (www.kyocera-sgstool.com) www.kyoceraD-sRgILsLtoSol.com DRILLS 315