METRIC Series M081 DC • mm Vc Series M081 Hardness (m/min) 0.15 0.25 0.5 1 2 3 RPM 180958 108575 54287 27144 13572 9048 CARBON STEELS ≤ 175 Bhn 85 1018, 1040, 1080, 1090, 10L50, or Fz 0.0031 0.0051 0.0103 0.0206 0.0412 0.0618 (68-102) 1140, 1212, 12L15, 1525, 1536 ≤ 7 HRc Feed (mm/min) 559 559 559 559 559 559 P RPM 116330 69798 34899 17449 8725 5816 ALLOY STEELS ≤ 275 Bhn 55 4140, 4150, 4320, 5120, or Fz 0.0029 0.0048 0.0097 0.0194 0.0387 0.0581 (44-66) 5150, 8630, 86L20, 50100 ≤ 28 HRc Feed (mm/min) 338 338 338 338 338 338 RPM 45239 27144 13572 6786 3393 2262 TOOL STEELS ≤ 475 Bhn 21 H A2, D2, H13, L2, M2, or Fz 0.0012 0.0020 0.0039 0.0079 0.0157 0.0236 (17-26) P20, S7, T15, W2 ≤ 50 HRc Feed (mm/min) 53 53 53 53 53 53 RPM 180958 108575 54287 27144 13572 9048 ≤ 220 Bhn CAST IRONS 85 K or Fz 0.0022 0.0037 0.0074 0.0148 0.0296 0.0444 Gray, Malleable, Ductile (68-102) ≤ 19 HRc Feed (mm/min) 401 401 401 401 401 401 RPM 135718 81431 40715 20358 10179 6786 STAINLESS STEELS ≤ 250 Bhn 64 (FREE MACHINING) or Fz 0.0032 0.0053 0.0106 0.0212 0.0424 0.0636 (51-77) 303, 416, 420F, 430F, 440F ≤ 24 HRc Feed (mm/min) 432 432 432 432 432 432 M STAINLESS STEELS RPM 116330 69798 34899 17449 8725 5816 ≤ 275 Bhn (DIFFICULT) 55 or Fz 0.0029 0.0048 0.0097 0.0194 0.0387 0.0581 304, 316, 321, 13-8 PH, 15-5PH, (44-66) ≤ 28 HRc 17-4 PH, CUSTOM 450 Feed (mm/min) 338 338 338 338 338 338 SUPER ALLOYS RPM 45239 27144 13572 6786 3393 2262 (NICKEL, COBALT, IRON BASE) ≤ 320 Bhn 21 Inconel 601, 617, 625, Incoloy or Fz 0.0018 0.0030 0.0060 0.0120 0.0240 0.0359 (17-26) 800, Monel 400, Rene, ≤ 34 HRc Waspaloy Feed (mm/min) 81 81 81 81 81 81 S TITANIUM ALLOYS RPM 77553 46532 23266 11633 5816 3878 ≤ 350 Bhn Pure Titanium, Ti6Al4V, 37 or Fz 0.0018 0.0031 0.0061 0.0122 0.0245 0.0367 Ti6Al2Sn4Zr2Mo, (29-44) ≤ 38 HRc Ti4Al4Mo2Sn0.5Si Feed (mm/min) 142 142 142 142 142 142 RPM 387767 232660 116330 58165 29082 19388 ≤ 150 Bhn ALUMINUM ALLOYS 183 or Fz 0.0035 0.0059 0.0118 0.0236 0.0472 0.0707 2017, 2024, 356, 6061, 7075 (146-219) ≤ 7 HRc Feed (mm/min) 1372 1372 1372 1372 1372 1372 RPM 122793 73676 36838 18419 9209 6140 COPPER ALLOYS ≤ 140 Bhn 58 N Alum Bronze, C110, Muntz or Fz 0.0029 0.0049 0.0097 0.0194 0.0389 0.0583 (46-69) Brass ≤ 3 HRc Feed (mm/min) 358 358 358 358 358 358 RPM 323139 193883 96942 48471 24235 16157 PLASTICS 152 Fz 0.0035 0.0059 0.0118 0.0236 0.0472 0.0707 Polycarbonate, PVC (122-183) Feed (mm/min) 1143 1143 1143 1143 1143 1143 Note: • Bhn (Brinell)   HRc (Rockwell C)   HRb (Rockwell B) • rpm = (Vc x 1000) / (DC x 3.14) • mm/min = Fr x rpm (Fr x maximum available rpm when recommendation exceeds machine limit) • reduce speed and feed 30% when using uncoated drills • reduce speed and feed for materials harder than listed • refer to the KYOCERA SGS Tool Wizard® or sgsmicrotools.com for complete technical information 110 DRILLS DRILLS www.sgsmicrotools.com