
FRACTIONAL 3 Flute Countersink Series DC • in 603 Vc Fractional Hardness (sfm) 1/8 3/16 1/4 3/8 1/2 3/4 1 225 RPM 6876 4584 3438 2292 1719 1146 860 ≤ 80 Bhn or Fr 0.0011 0.0017 0.0023 0.0034 0.0045 0.0068 0.0091 ALUMINUM ALLOYS ≤ 47 HRb (180-270) Feed (ipm) 7.8 7.8 7.8 7.8 7.8 7.8 7.8 2017, 2024, 356, 6061, 7075 190 RPM 5806 3871 2903 1935 1452 968 726≤ 150 Bhn or Fr 0.0011 0.0017 0.0022 0.0034 0.0045 0.0067 0.0090 ≤ 7 HRc (152-228) Feed (ipm) 6.5 6.5 6.5 6.5 6.5 6.5 6.5 N 95 RPM 2903 1935 1452 968 726 484 363 ≤ 140 Bhn or Fr 0.0006 0.0009 0.0012 0.0018 0.0023 0.0035 0.0047 COPPER ALLOYS ≤ 3 HRc (76-114) Feed (ipm) 1.7 1.7 1.7 1.7 1.7 1.7 1.7 Alum Bronze, C110, Muntz Brass 80 RPM 2445 1630 1222 815 611 407 306≤ 200 Bhn or Fr 0.0006 0.0009 0.0011 0.0017 0.0023 0.0034 0.0046 ≤ 23 HRc (64-96) Feed (ipm) 1.4 1.4 1.4 1.4 1.4 1.4 1.4 18 RPM 550 367 275 183 138 92 69 ≤ 220 Bhn or Fr 0.0004 0.0005 0.0007 0.0011 0.0015 0.0022 0.0029 ≤ 19 HRc (14-22) Feed (ipm) 0.2 0.2 0.2 0.2 0.2 0.2 0.2 SUPER ALLOYS (NICKEL, COBALT,IRON BASE)Inconel 601, 617, 625,Incoloy 800, Monel 400,≤ 320 Bhnor≤ 34 HRc14RPMFr(11-17)Feed (ipm)4280.00020.12850.00040.12140.00050.11430.00070.11070.00090.1710.00140.1530.00190.1 Rene, Waspaloy 12 RPM 367 244 183 122 92 61 46 ≤ 425 Bhn or Fr 0.0003 0.0004 0.0005 0.0008 0.0011 0.0016 0.0022 ≤ 45 HRc (10-14) Feed (ipm) 0.1 0.1 0.1 0.1 0.1 0.1 0.1 S 36 RPM 1100 733 550 367 275 183 138 ≤ 275 Bhn or Fr 0.0007 0.0011 0.0015 0.0022 0.0029 0.0044 0.0058 ≤ 28 HRc (29-43) Feed (ipm) 0.8 0.8 0.8 0.8 0.8 0.8 0.8 TITANIUM ALLOYS 28 RPM 856 570 428 285 214 143 107 Pure Titanium, Ti6Al4V, ≤ 350 Bhn Ti6Al2Sn4Zr2Mo, or Fr 0.0006 0.0009 0.0012 0.0018 0.0023 0.0035 0.0047 Ti4Al4Mo2Sn0.5Si, ≤ 38 HRc (22-34) Ti-6Al4V Feed (ipm) 0.5 0.5 0.5 0.5 0.5 0.5 0.5 ≤ 440 Bhn 21 RPM 642 428 321 214 160 107 80 or Fr 0.0002 0.0002 0.0003 0.0005 0.0006 0.0009 0.0012 ≤ 47 HRc (17-25) Feed (ipm) 0.1 0.1 0.1 0.1 0.1 0.1 0.1 35 RPM 1070 713 535 357 267 178 134 ≤ 250 Bhn or Fr 0.0004 0.0006 0.0007 0.0011 0.0015 0.0022 0.0030 ≤ 24 HRc (28-42) Feed (ipm) 0.4 0.4 0.4 0.4 0.4 0.4 0.4 TOOL STEELS ≤ 375 Bhn 25 RPM 764 509 382 255 191 127 96 H A2, D2, H13, L2, M2, or Fr 0.0003 0.0004 0.0005 0.0008 0.0010 0.0016 0.0021 P20, S7, T15, W2 ≤ 40 HRc (20-30) Feed (ipm) 0.2 0.2 0.2 0.2 0.2 0.2 0.2 20 RPM 611 407 306 204 153 102 76 ≤ 475 Bhn or Fr 0.0002 0.0002 0.0003 0.0005 0.0007 0.0010 0.0013 ≤ 50 HRc (16-24) Feed (ipm) 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Bhn (Brinell) HRc (Rockwell C) HRb (Rockwell B) rpm = Vc x 3.82 / DC ipm = Fr x rpm reduce speed and feed for materials harder than listed refer to the SGS Tool Wizard® for complete technical information (www.kyocera-sgstool.com) www.kyoceraD-sRgILsLtoSol.com DRILLS 321