METRIC Multi-Carb Ap Series Diameter (D1) Ae Ae (mm) 66M, 66MCR Vc Metric Hardness Ae x D1 Ap x D1 (m/min) 6 8 10 12 16 20 25 Profile 194 RPM 10260 7695 6156 5130 3847 3078 2462 ≤ 0.05 ≤1 Fz 0.029 0.047 0.059 0.072 0.095 0.101 0.105 CARBON STEELS (155-232) 1018, 1040, 1080, ≤ 275 Bhn Feed (mm/min) 2068 2528 2528 3324 3280 3431 2844 1090, 10L50, 1140, or 1212, 12L15, 1525, ≤ 28 HRc 232 RPM 12312 9234 7387 6156 4617 3693 2955 1536 Finish ≤ 0.02 ≤2 Fz 0.023 0.038 0.047 0.058 0.076 0.081 0.084 (186-279) Feed (mm/min) 1985 2427 2427 3191 3149 3294 2730 P 110 RPM 5816 4362 3490 2908 2181 1745 1396 Profile ≤ 0.05 ≤1 Fz 0.022 0.036 0.045 0.055 0.074 0.080 0.080 ALLOY STEELS (88-132) 4140, 4150, 4320, ≤ 375 Bhn Feed (mm/min) 879 1108 1107 1445 1457 1536 1229 5120, 5150, 8630, or 86L20, 50100 ≤ 40 HRc 132 RPM 6980 5235 4188 3490 2617 2094 1675 Finish ≤ 0.02 ≤2 Fz 0.017 0.029 0.036 0.044 0.059 0.064 0.064 (105-158) Feed (mm/min) 844 1063 1063 1387 1399 1474 1179 88 RPM 4686 3514 2811 2343 1757 1406 1125 Profile ≤ 0.05 ≤1 Fz 0.014 0.026 0.032 0.038 0.051 0.056 0.055 (71-106) TOOL STEELS ≤ 375 Bhn Feed (mm/min) 472 630 630 810 810 866 680 H A2, D2, H13, L2, M2, or P20, S7, T15, W2 ≤ 40 HRc 106 RPM 5623 4217 3374 2811 2108 1687 1349 Finish ≤ 0.02 ≤2 Fz 0.012 0.020 0.026 0.031 0.041 0.045 0.044 (85-127) Feed (mm/min) 453 605 605 777 777 831 653 215 RPM 11391 8543 6834 5695 4271 3417 2734 Profile ≤ 0.05 ≤1 Fz 0.029 0.047 0.059 0.072 0.095 0.101 0.105 CAST IRONS (172-258) (LOW & MEDIUM ≤ 220 Bhn Feed (mm/min) 2296 2807 2807 3690 3641 3809 3158 ALLOY) or Gray, Malleable, ≤ 19 HRc 258 RPM 13669 10252 8201 6834 5126 4101 3281 Ductile Finish ≤ 0.02 ≤2 Fz 0.023 0.038 0.047 0.058 0.076 0.081 0.084 (206-309) Feed (mm/min) 2204 2695 2694 3543 3496 3657 3031 K 165 RPM 8725 6544 5235 4362 3272 2617 2094 Profile ≤ 0.05 ≤1 Fz 0.022 0.036 0.045 0.055 0.074 0.080 0.080 CAST IRONS (132-198) (HIGH ALLOY) ≤ 260 Bhn Feed (mm/min) 1319 1661 1661 2167 2186 2303 1843 Gray, Malleable, or Ductile ≤ 26 HRc 198 RPM 10470 7852 6282 5235 3926 3141 2513 Finish ≤ 0.02 ≤2 Fz 0.017 0.029 0.036 0.044 0.059 0.064 0.064 (158-237) Feed (mm/min) 1266 1595 1595 2080 2099 2211 1769 171 RPM 9048 6786 5429 4524 3393 2714 2171 Profile ≤ 0.05 ≤1 Fz 0.022 0.036 0.045 0.055 0.074 0.080 0.080 STAINLESS STEELS (137-205) (FREE MACHINING) ≤ 275 Bhn Feed (mm/min) 1368 1723 1723 2247 2267 2389 1911 M 303, 416, 420F, or 430F, 440F ≤ 28 HRc 137 RPM 7238 5429 4343 3619 2714 2171 1737 Finish ≤ 0.02 ≤2 Fz 0.017 0.029 0.036 0.044 0.059 0.064 0.064 (109-164) Feed (mm/min) 875 1103 1103 1438 1451 1529 1223 continued on next page 90 END MILLS wwwE.kNyDoMceILraLS-sgstool.com