Series Diameter (D1) 140M 5D Vc (mm) Metric Hardness (m/min) 3 6 8 10 12 14 16 ≤ 175 Bhn 130 RPM 13733 6867 5150 4120 3433 2943 2575 or (104-155) Fr 0.095 0.189 0.252 0.316 0.379 0.442 0.505 ≤ 7 HRc Feed (mm/min) 1300 1300 1300 1300 1300 1300 1300 CARBON STEELS ≤ 275 Bhn 116 RPM 12279 6140 4605 3684 3070 2631 2302 1018, 1040, 1080, 1090, 10L50, or (93-139) Fr 0.086 0.171 0.228 0.285 0.342 0.399 0.456 Speed & Feed Recommendations 1140, 1212, 12L15, 1525, 1536 ≤ 28 HRc Feed (mm/min) 1050 1050 1050 1050 1050 1050 1050 ≤ 425 Bhn 67 RPM 7109 3555 2666 2133 1777 1523 1333 or (54-80) Fr 0.071 0.142 0.189 0.237 0.284 0.332 0.379 ≤ 45 HRc Feed (mm/min) 505 505 505 505 505 505 505 P 101 RPM 10664 5332 3999 3199 2666 2285 1999 ≤ 275 Bhn or (80-121) Fr 0.071 0.143 0.190 0.238 0.285 0.333 0.380 ≤ 28 HRc Feed (mm/min) 760 760 760 760 760 760 760 ALLOY STEELS ≤ 375 Bhn 61 RPM 6463 3231 2424 1939 1616 1385 1212 4140, 4150, 4320, 5120, or (49-73) Fr 0.062 0.124 0.165 0.206 0.248 0.289 0.330 5150, 8630, 86L20, 50100 ≤ 40 HRc Feed (mm/min) 400 400 400 400 400 400 400 ≤ 450 Bhn 43 RPM 4524 2262 1696 1357 1131 969 848 or (34-51) Fr 0.043 0.086 0.115 0.144 0.172 0.201 0.230 ≤ 48 HRc Feed (mm/min) 195 195 195 195 195 195 195 ≤ 200 Bhn 44 RPM 4686 2343 1757 1406 1171 1004 879 |  or (35-53) Fr 0.061 0.122 0.162 0.203 0.243 0.284 0.324 Series 140 5xD  ≤ 13 HRc Feed (mm/min) 285 285 285 285 285 285 285 TOOL STEELS ≤ 375 Bhn 29 RPM 3070 1535 1151 921 767 658 576 H A2, D2, H13, L2, M2, or (23-35) Fr 0.029 0.059 0.078 0.098 0.117 0.137 0.156 P20, S7, T15, W2 ≤ 40 HRc Feed (mm/min) 90 90 90 90 90 90 90 ≤ 475 Bhn 26 RPM 2747 1373 1030 824 687 589 515 or (21-31) Fr 0.018 0.036 0.049 0.061 0.073 0.085 0.097 ≤ 50 HRc Feed (mm/min) 50 50 50 50 50 50 50 ≤ 220 Bhn 110 RPM 11633 5816 4362 3490 2908 2493 2181 or (88-132) Fr 0.109 0.218 0.291 0.364 0.437 0.509 0.582 ≤ 19 HRc Feed (mm/min) 1270 1270 1270 1270 1270 1270 1270 K CAST IRONS Gray, Malleable, Ductile 102 RPM 10825 5413 4059 3248 2706 2320 2030 ≤ 260 Bhn or (82-123) Fr 0.109 0.218 0.291 0.363 0.436 0.509 0.581 ≤ 26 HRc Feed (mm/min) 1180 1180 1180 1180 1180 1180 1180 ≤ 185 Bhn 93 RPM 9856 4928 3696 2957 2464 2112 1848 or (74-112) Fr 0.061 0.123 0.164 0.205 0.246 0.286 0.327 STAINLESS STEELS ≤ 9 HRc Feed (mm/min) 605 605 605 605 605 605 605 (FREE MACHINING) 59 RPM 6301 3151 2363 1890 1575 1350 1181 303, 416, 420F, 430F, 440F ≤ 275 Bhn or (48-71) Fr 0.048 0.095 0.127 0.159 0.190 0.222 0.254 ≤ 28 HRc Feed (mm/min) 300 300 300 300 300 300 300 M 46 RPM 4847 2424 1818 1454 1212 1039 909 ≤ 275 Bhn or (37-55) Fr 0.047 0.095 0.127 0.158 0.190 0.221 0.253 STAINLESS STEELS ≤ 28 HRc Feed (mm/min) 230 230 230 230 230 230 230 (DIFFICULT) 304, 316, 321, 13-8 PH, 34 RPM 3555 1777 1333 1066 889 762 666 15-5PH, 17-4 PH, Custom 450 ≤ 375 Bhn or (27-40) Fr 0.042 0.084 0.113 0.141 0.169 0.197 0.225 ≤ 40 HRc Feed (mm/min) 150 150 150 150 150 150 150 continued on next page 50 www.kyocera-sgstool.com