METRIC V-Carb Ap Series 55M, 55MCR, Ae Ae DC • mm 55MB Vc Metric Hardness Ae x DC Ap x DC (m/min) 6 8 10 12 16 20 117 RPM 6220 4665 3732 3110 2333 1866 Profile ≤ 0.25 ≤ 1.5 Fz 0.022 0.036 0.061 0.070 0.072 0.085 CARBON STEELS (94-141) 1018, 1040, 1080, ≤ 275 Bhn Feed (mm/min) 672 846 1145 1082 836 796 1090, 10L50, 1140, or 1212, 12L15, 1525, ≤ 28 HRc 192 RPM 10179 7634 6107 5089 3817 3054 1536 HSM ≤ 0.05 ≤2 Fz 0.043 0.073 0.123 0.137 0.141 0.154 (154-230) Feed (mm/min) 2198 2769 3746 3481 2687 2345 P 99 RPM 5251 3938 3151 2626 1969 1575 Profile ≤ 0.25 ≤ 1.5 Fz 0.017 0.028 0.045 0.053 0.054 0.064 ALLOY STEELS (79-119) ≤ 375 Bhn Feed (mm/min) 441 546 571 693 529 504 4140, 4150, 4320, or 5120, 5150, 8630, 162 RPM 8563 6422 5138 4282 3211 2569 ≤ 40 HRc 86L20, 50100 HSM ≤ 0.05 ≤2 Fz 0.034 0.055 0.091 0.103 0.105 0.128 (129-194) Feed (mm/min) 1438 1781 2329 2209 1685 1644 113 RPM 5978 4484 3587 2989 2242 1793 Profile ≤ 0.25 ≤ 1.5 Fz 0.017 0.028 0.045 0.053 0.059 0.064 STAINLESS STEELS (90-135) ≤ 275 Bhn Feed (mm/min) 502 622 813 789 660 574 (FREE MACHINING) or 303, 416, 420F, 171 RPM 9048 6786 5429 4524 3393 2714 ≤ 28 HRc 430F, 440F HSM ≤ 0.05 ≤2 Fz 0.034 0.055 0.091 0.103 0.113 0.128 (137-205) Feed (mm/min) 1520 1882 2461 2334 1911 1737 78 RPM 4120 3090 2472 2060 1545 1236 Profile ≤ 0.25 ≤ 1.5 Fz 0.014 0.026 0.043 0.048 0.054 0.061 (62-93) STAINLESS STEELS ≤ 275 Bhn Feed (mm/min) 297 396 527 494 415 379 M (DIFFICULT) or 304, 304L, 316, 316L ≤ 28 HRc 117 RPM 6220 4665 3732 3110 2333 1866 HSM ≤ 0.05 ≤2 Fz 0.031 0.051 0.085 0.096 0.105 0.120 (94-141) Feed (mm/min) 970 1194 1592 1493 1224 1120 72 RPM 3797 2848 2278 1898 1424 1139 Profile ≤ 0.25 ≤ 1.5 Fz 0.014 0.021 0.037 0.041 0.046 0.051 STAINLESS STEELS (57-86) ≤ 325 Bhn Feed (mm/min) 273 304 425 387 328 289 (PH) or 13-8 PH, 15-5 PH, 108 RPM 5736 4302 3441 2868 2151 1721 ≤ 35 HRc 17-4 PH, Custom 450 HSM ≤ 0.05 ≤2 Fz 0.026 0.045 0.075 0.082 0.092 0.104 (87-130) Feed (mm/min) 757 964 1285 1170 991 895 continued on next page 71 END MILLS www.kyocera-sgstool.com END MILLS