FRACTIONAL 3 Flute Countersink Series Diameter (D1) 603 Vc (inch) Fractional Hardness (sfm) 1/8 3/16 1/4 3/8 1/2 3/4 1 ≤ 220 Bhn 18 RPM 550 367 275 183 138 92 69 or (14-22) Fr 0.0004 0.0005 0.0007 0.0011 0.0015 0.0022 0.0029 ≤ 19 HRc Feed (ipm) 0.2 0.2 0.2 0.2 0.2 0.2 0.2 SUPER ALLOYS 14 RPM 428 285 214 143 107 71 53 (NICKEL, COBALT, ≤ 320 Bhn IRON BASE) or Fr 0.0002 0.0004 0.0005 0.0007 0.0009 0.0014 0.0019 Inconel 601, 617, 625, ≤ 34 HRc (11-17) Incoloy 800, Monel 400, Feed (ipm) 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Rene, Waspaloy 12 RPM 367 244 183 122 92 61 46 ≤ 425 Bhn or (10-14) Fr 0.0003 0.0004 0.0005 0.0008 0.0011 0.0016 0.0022 ≤ 45 HRc 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 (29-43) Fr 0.0007 0.0011 0.0015 0.0022 0.0029 0.0044 0.0058 ≤ 28 HRc 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 (22-34) Fr 0.0006 0.0009 0.0012 0.0018 0.0023 0.0035 0.0047 Ti4Al4Mo2Sn0.5Si, ≤ 38 HRc Feed (ipm) 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Ti-6Al4V ≤ 440 Bhn 21 RPM 642 428 321 214 160 107 80 or (17-25) Fr 0.0002 0.0002 0.0003 0.0005 0.0006 0.0009 0.0012 ≤ 47 HRc Feed (ipm) 0.1 0.1 0.1 0.1 0.1 0.1 0.1 ≤ 80 Bhn 225 RPM 6876 4584 3438 2292 1719 1146 860 or (180-270) Fr 0.0011 0.0017 0.0023 0.0034 0.0045 0.0068 0.0091 ALUMINUM ALLOYS ≤ 47 HRb Feed (ipm) 7.8 7.8 7.8 7.8 7.8 7.8 7.8 2017, 2024, 356, 190 RPM 5806 3871 2903 1935 1452 968 726 6061, 7075 ≤ 150 Bhn or (152-228) Fr 0.0011 0.0017 0.0022 0.0034 0.0045 0.0067 0.0090 ≤ 7 HRc 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 (76-114) Fr 0.0006 0.0009 0.0012 0.0018 0.0023 0.0035 0.0047 COPPER ALLOYS ≤ 3 HRc Feed (ipm) 1.7 1.7 1.7 1.7 1.7 1.7 1.7 Alum Bronze, C110, 80 RPM 2445 1630 1222 815 611 407 306 Muntz Brass ≤ 200 Bhn or (64-96) Fr 0.0006 0.0009 0.0011 0.0017 0.0023 0.0034 0.0046 ≤ 23 HRc Feed (ipm) 1.4 1.4 1.4 1.4 1.4 1.4 1.4 Bhn (Brinell) HRc (Rockwell C) HRb (Rockwell B) rpm = Vc x 3.82 / D1 ipm = Fr x rpm 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 321