METRIC Hi-PerCarb Series Diameter (D1) 135 3D Vc (inch) Metric Hardness (m/min) 1.5 3 6 8 10 12 16 20 ≤ 175 Bhn 117 RPM 24882 12441 6220 4665 3732 3110 2333 1866 or (94-141) Fr 0.047 0.094 0.189 0.252 0.315 0.378 0.504 0.630 ≤ 7 HRc Feed (mm/min) 1175 1175 1175 1175 1175 1175 1175 1175 CARBON STEELS ≤ 275 Bhn 107 RPM 22620 11310 5655 4241 3393 2827 2121 1696 1018, 1040, 1080, 1090, 10L50, or (85-128) Fr 0.043 0.086 0.172 0.229 0.286 0.343 0.457 0.572 1140, 1212, 12L15, 1525, 1536 ≤ 28 HRc Feed (mm/min) 970 970 970 970 970 970 970 970 ≤ 475 Bhn 61 RPM 12926 6463 3231 2424 1939 1616 1212 969 or (49-73) Fr 0.036 0.071 0.142 0.190 0.237 0.285 0.380 0.475 ≤ 45 HRc Feed (mm/min) 460 460 460 460 460 460 460 460 P 91 RPM 19388 9694 4847 3635 2908 2424 1818 1454 ≤ 275 Bhn or (73-110) Fr 0.036 0.071 0.142 0.190 0.237 0.285 0.380 0.475 ≤ 28 HRc Feed (mm/min) 690 690 690 690 690 690 690 690 ALLOY STEELS ≤ 375 Bhn 56 RPM 11956 5978 2989 2242 1793 1495 1121 897 4140, 4150, 4320, 5120, 5150, or (45-68) Fr 0.031 0.061 0.122 0.163 0.204 0.244 0.326 0.407 8630, 86L20, 50100 ≤ 40 HRc Feed (mm/min) 365 365 365 365 365 365 365 365 ≤ 450 Bhn 40 RPM 8402 4201 2100 1575 1260 1050 788 630 or (32-48) Fr 0.021 0.042 0.083 0.111 0.139 0.167 0.222 0.278 ≤ 48 HRc Feed (mm/min) 175 175 175 175 175 175 175 175 ≤ 200 Bhn 40 RPM 8402 4201 2100 1575 1260 1050 788 630 or (32-48) Fr 0.032 0.063 0.126 0.168 0.210 0.252 0.336 0.421 ≤ 13 HRc Feed (mm/min) 265 265 265 265 265 265 265 265 TOOL STEELS ≤ 375 Bhn 27 RPM 5816 2908 1454 1091 872 727 545 436 H A2, D2, H13, L2, M2, or (22-33) Fr 0.014 0.028 0.055 0.073 0.092 0.110 0.147 0.183 P20, S7, T15, W2 ≤ 40 HRc Feed (mm/min) 80 80 80 80 80 80 80 80 ≤ 475 Bhn 23 RPM 4847 2424 1212 909 727 606 454 364 or (18-27) Fr 0.009 0.019 0.037 0.050 0.062 0.074 0.099 0.124 ≤ 50 HRc Feed (mm/min) 45 45 45 45 45 45 45 45 ≤ 220 Bhn 98 RPM 20681 10340 5170 3878 3102 2585 1939 1551 or (78-117) Fr 0.055 0.110 0.220 0.293 0.366 0.439 0.585 0.732 CAST IRONS ≤ 19 HRc Feed (mm/min) 1135 1135 1135 1135 1135 1135 1135 1135 K Gray, Malleable, 87 RPM 18419 9209 4605 3454 2763 2302 1727 1381 Ductile ≤ 260 Bhn or (69-104) Fr 0.055 0.110 0.219 0.292 0.366 0.439 0.585 0.731 ≤ 26 HRc Feed (mm/min) 1010 1010 1010 1010 1010 1010 1010 1010 ≤ 185 Bhn 84 RPM 17773 8886 4443 3332 2666 2222 1666 1333 or (67-101) Fr 0.031 0.061 0.123 0.164 0.204 0.245 0.327 0.409 STAINLESS STEELS ≤ 9 HRc Feed (mm/min) 545 545 545 545 545 545 545 545 (FREE MACHINING) 52 RPM 10987 5493 2747 2060 1648 1373 1030 824 303, 416, 420F, 430F, 440F ≤ 275 Bhn or (41-62) Fr 0.024 0.047 0.095 0.126 0.158 0.189 0.252 0.316 ≤ 28 HRc Feed (mm/min) 260 260 260 260 260 260 260 260 M 27 RPM 5816 2908 1454 1091 872 727 545 436 ≤ 275 Bhn or (22-33) Fr 0.023 0.046 0.093 0.124 0.155 0.186 0.248 0.309 STAINLESS STEELS ≤ 28 HRc Feed (mm/min) 135 135 135 135 135 135 135 135 (DIFFICULT) 304, 316, 321, 13-8 PH, 20 RPM 4201 2100 1050 788 630 525 394 315 15-5PH, 17-4 PH, Custom 450 ≤ 375 Bhn or (16-24) Fr 0.020 0.040 0.081 0.108 0.135 0.162 0.216 0.270 ≤ 40 HRc Feed (mm/min) 85 85 85 85 85 85 85 85 continued on next page 248 DRILLS www.kDyRoIcLeLrSa-sgstool.com