METRIC Hi-PerCarb Series Diameter (D1) 135M 5D Vc (mm) Metric Hardness (m/min) 1.5 3 6 8 10 12 16 20 ≤ 175 Bhn 105 RPM 22297 11148 5574 4181 3344 2787 2090 1672 or (84-126) Fr 0.048 0.095 0.190 0.254 0.317 0.380 0.507 0.634 ≤ 7 HRc Feed (mm/min) 1060 1060 1060 1060 1060 1060 1060 1060 CARBON STEELS ≤ 275 Bhn 94 RPM 20035 10017 5009 3756 3005 2504 1878 1503 1018, 1040, 1080, 1090, 10L50, or (76-113) Fr 0.043 0.085 0.171 0.228 0.285 0.341 0.455 0.569 1140, 1212, 12L15, 1525, 1536 ≤ 28 HRc Feed (mm/min) 855 855 855 855 855 855 855 855 ≤ 425 Bhn 55 RPM 11633 5816 2908 2181 1745 1454 1091 872 or (44-66) Fr 0.036 0.071 0.143 0.190 0.238 0.285 0.381 0.476 ≤ 45 HRc Feed (mm/min) 415 415 415 415 415 415 415 415 P 82 RPM 17449 8725 4362 3272 2617 2181 1636 1309 ≤ 275 Bhn or (66-99) Fr 0.036 0.072 0.143 0.191 0.239 0.287 0.382 0.478 ≤ 28 HRc Feed (mm/min) 625 625 625 625 625 625 625 625 ALLOY STEELS ≤ 375 Bhn 50 RPM 10664 5332 2666 1999 1600 1333 1000 800 4140, 4150, 4320, 5120, or (40-60) Fr 0.031 0.062 0.124 0.165 0.206 0.248 0.330 0.413 5150, 8630, 86L20, 50100 ≤ 40 HRc Feed (mm/min) 330 330 330 330 330 330 330 330 ≤ 450 Bhn 35 RPM 7432 3716 1858 1394 1115 929 697 557 or (28-42) Fr 0.022 0.043 0.086 0.115 0.144 0.172 0.230 0.287 ≤ 48 HRc Feed (mm/min) 160 160 160 160 160 160 160 160 ≤ 200 Bhn 37 RPM 7755 3878 1939 1454 1163 969 727 582 or (29-44) Fr 0.031 0.062 0.124 0.165 0.206 0.248 0.330 0.413 ≤ 13 HRc Feed (mm/min) 240 240 240 240 240 240 240 240 TOOL STEELS ≤ 375 Bhn 24 RPM 5170 2585 1293 969 776 646 485 388 H A2, D2, H13, L2, M2, or (20-29) Fr 0.015 0.029 0.058 0.077 0.097 0.116 0.155 0.193 P20, S7, T15, W2 ≤ 40 HRc Feed (mm/min) 75 75 75 75 75 75 75 75 ≤ 475 Bhn 21 RPM 4524 2262 1131 848 679 565 424 339 or (17-26) Fr 0.010 0.020 0.040 0.053 0.066 0.080 0.106 0.133 ≤ 50 HRc Feed (mm/min) 45 45 45 45 45 45 45 45 ≤ 220 Bhn 91 RPM 19388 9694 4847 3635 2908 2424 1818 1454 or (73-110) Fr 0.054 0.108 0.217 0.289 0.361 0.433 0.578 0.722 ≤ 19 HRc Feed (mm/min) 1050 1050 1050 1050 1050 1050 1050 1050 K CAST IRONS Gray, Malleable, Ductile 81 RPM 17126 8563 4282 3211 2569 2141 1606 1284 ≤ 260 Bhn or (65-97) Fr 0.055 0.109 0.218 0.291 0.364 0.437 0.582 0.728 ≤ 26 HRc Feed (mm/min) 935 935 935 935 935 935 935 935 ≤ 185 Bhn 76 RPM 16157 8078 4039 3029 2424 2020 1515 1212 or (61-91) Fr 0.031 0.061 0.123 0.163 0.204 0.245 0.327 0.408 STAINLESS STEELS ≤ 9 HRc Feed (mm/min) 495 495 495 495 495 495 495 495 (FREE MACHINING) 46 RPM 9694 4847 2424 1818 1454 1212 909 727 303, 416, 420F, 430F, 440F ≤ 275 Bhn or (37-55) Fr 0.024 0.047 0.095 0.127 0.158 0.190 0.253 0.316 ≤ 28 HRc Feed (mm/min) 230 230 230 230 230 230 230 230 M 24 RPM 5170 2585 1293 969 776 646 485 388 ≤ 275 Bhn or (20-29) Fr 0.023 0.046 0.093 0.124 0.155 0.186 0.248 0.309 STAINLESS STEELS ≤ 28 HRc Feed (mm/min) 120 120 120 120 120 120 120 120 (DIFFICULT) 304, 316, 321, 13-8 PH, 17 RPM 3555 1777 889 666 533 444 333 267 15-5PH, 17-4 PH, Custom 450 ≤ 375 Bhn or (13-20) Fr 0.021 0.042 0.084 0.113 0.141 0.169 0.225 0.281 ≤ 40 HRc Feed (mm/min) 75 75 75 75 75 75 75 75 continued on next page 258 DRILLS www.kDyRoIcLeLrSa-sgstool.com