METRIC 4 Flute: Ball Ap M4MB Ae Ae Diameter (D1) 3xD Vc (mm) Metric Hardness Ae x D1 Ap x D1 (m/min) 0.1 0.5 1 1.5 2 2.5 3 Profile 111 RPM 353837 70767 35384 23589 17692 14153 11795 CARBON STEELS ≤ .10 ≤ .25 ≤2 (89-134) Fz 0.00030 0.00152 0.00305 0.00457 0.00610 0.00762 0.00915 1018, 1040, 1080, 1090, ≤ 275 Bhn Feed (mm/min) 432 432 432 432 432 432 432 or 10L50, 1140, 1212, ≤ 28 HRc 88 RPM 281131 56226 28113 18742 14057 11245 9371 Slot 12L15, 1525, 1536 1 ≤ .15 ≤ .35 Fz 0.00030 0.00152 0.00305 0.00457 0.00610 0.00762 0.00915 (71-106) Feed (mm/min) 343 343 343 343 343 343 343 P 64 RPM 203577 40715 20358 13572 10179 8143 6786 Profile ALLOY STEELS ≤ .10 ≤ .25 ≤2 (51-77) Fz 0.00028 0.00139 0.00278 0.00417 0.00556 0.00695 0.00835 4140, 4150, 4320, 5120, ≤ 375 Bhn Feed (mm/min) 226 226 226 226 226 226 226 or 5150, 8630, 86L20, ≤ 40 HRc 50 RPM 159954 31991 15995 10664 7998 6398 5332 Slot 50100 1 ≤ .15 ≤ .35 Fz 0.00028 0.00139 0.00278 0.00417 0.00556 0.00695 0.00835 (40-60) Feed (mm/min) 178 178 178 178 178 178 178 Profile 53 RPM 169648 33930 16965 11310 8482 6786 5655 ≤ .10 ≤ .25 ≤2 (43-64) Fz 0.00022 0.00110 0.00220 0.00330 0.00440 0.00550 0.00658 TOOL STEELS ≤ 375 Bhn Feed (mm/min) 149 149 149 149 149 149 149 or H A2, D2, H13, L2, M2, ≤ 40 HRc 43 RPM 135718 27144 13572 9048 6786 5429 4524 P20, S7, T15, W2 Slot 1 ≤ .15 ≤ .35 (34-51) Fz 0.00022 0.00110 0.00220 0.00330 0.00440 0.00550 0.00658 Feed (mm/min) 119 119 119 119 119 119 119 Profile 93 RPM 295672 59134 29567 19711 14784 11827 9856 CAST IRONS ≤ .10 ≤ .25 ≤2 (74-112) Fz 0.00031 0.00154 0.00307 0.00461 0.00615 0.00769 0.00922 (LOW & MEDIUM ≤ 220 Bhn Feed (mm/min) 364 364 364 364 364 364 364 or K ALLOY) ≤ 19 HRc 75 RPM 237507 47501 23751 15834 11875 9500 7917 Gray, Malleable, Slot Ductile 1 ≤ .15 ≤ .35 Fz 0.00031 0.00154 0.00307 0.00461 0.00615 0.00769 0.00922 (60-90) Feed (mm/min) 292 292 292 292 292 292 292 Profile 104 RPM 329602 65920 32960 21973 16480 13184 10987 STAINLESS STEELS ≤ .10 ≤ .25 ≤2 (83-124) Fz 0.00030 0.00152 0.00303 0.00455 0.00607 0.00758 0.00911 (FREE MACHINING) ≤ 275 Bhn Feed (mm/min) 400 400 400 400 400 400 400 or 303, 416, 420F, 430F, ≤ 28 HRc 82 RPM 261742 52348 26174 17449 13087 10470 8725 Slot 440F 1 ≤ .15 ≤ .35 Fz 0.00030 0.00152 0.00303 0.00455 0.00607 0.00758 0.00911 (66-99) Feed (mm/min) 318 318 318 318 318 318 318 Profile 72 RPM 227813 45563 22781 15188 11391 9113 7594 ≤ .10 ≤ .25 ≤2 (57-86) Fz 0.00028 0.00140 0.00280 0.00420 0.00559 0.00699 0.00841 STAINLESS STEELS ≤ 275 Bhn Feed (mm/min) 255 255 255 255 255 255 255 or M (DIFFICULT) ≤ 28 HRc 56 RPM 179342 35868 17934 11956 8967 7174 5978 304, 304L, 316, 316L Slot 1 ≤ .15 ≤ .35 (45-68) Fz 0.00028 0.00140 0.00280 0.00420 0.00559 0.00699 0.00841 Feed (mm/min) 201 201 201 201 201 201 201 Profile 66 RPM 208425 41685 20842 13895 10421 8337 6947 STAINLESS STEELS ≤ .10 ≤ .25 ≤2 (52-79) Fz 0.00020 0.00098 0.00197 0.00295 0.00393 0.00491 0.00592 (PH) ≤ 325 Bhn Feed (mm/min) 164 164 164 164 164 164 164 or 13-8 PH, 15-5PH, ≤ 35 HRc 52 RPM 164801 32960 16480 10987 8240 6592 5493 Slot 17-4 PH, CUSTOM 450 1 ≤ .15 ≤ .35 Fz 0.00020 0.00098 0.00197 0.00295 0.00393 0.00491 0.00592 (41-62) Feed (mm/min) 130 130 130 130 130 130 130 continued on next page 5 2 END MILLS wwwE.NkDspMtImLLicSrotools.com