Series 7, 7BAeAp AeVcDiameter ( (inch)D1)
FractionalHardnessAe x D1Ap x D1(sfm)1/81/43/81/25/83/41
CARBON STEELS≤ 275 BhnFinish480RPM14669733448903667293424451834
1018, 1040, 1080, 1090, 10L50, 1140, 1212, 12L15,or ≤ 28 HR≤ 0.02≤ 2(384-576)Fz0.00040.00100.00190.00250.00320.00330.0035
P 1525, 1536cFeed (ipm)23.529.337.236.737.632.325.7
ALLOY STEELS≤ 375 BhnFinish275RPM8404420228012101168114011051
4140, 4150, 4320, 5120,or≤ 0.02≤ 2220330Fz0.00030.00070.00140.00180.00230.00240.0026
5150, 8630, 86L20, 50100≤ 40 HRc(-)Feed (ipm)10.111.815.715.115.513.410.9
Fiih230RPM702935142343175714061171879
H TOOL STEELS A2, D2, H13, L2, M2, P20 S7 T15 W2≤ 375 Bhn or ≤ 40 HRns≤ 0.02≤ 2(184-276)Fz0.00020.00060.00120.00160.00200.00210.0022
, , ,cFeed (ipm)5.68.411.211.211.29.87.7
CAST IRONS≤ 220 BhnFinish605RPM18489924461634622369830812311
(LOW & MEDIUM ALLOY)or≤ 0.02≤ 2Fz0.00060.00150.00280.00370.00460.00470.0051
Gray, Malleable, Ductile≤ 19 HRc(484-726)Feed (ipm)44.455.569.068.468.057.947.1
K465RPM14210710547373553284223681776
CAST IRONS (HIGH ALLOY)≤ 260 Bhn orFinish≤ 0.02≤ 2Fz0.00040.00110.00210.00280.00340.00360.0039
Gray, Malleable, Ductile≤ 26 HRc(372-558)Feed (ipm)22.731.339.839.838.734.127.7
STAINLESS STEELS≤ 275 BhnFinish420RPM12835641842783209256721391604
(FREE MACHINING)or≤ 0.02≤ 2Fz0.00040.00100.00190.00250.00320.00330.0035
303, 416, 420F, 430F, 440F≤ 28 HRc(336-504)Feed (ipm)20.525.732.532.132.928.222.5
STAINLESS STEELS≤ 275 BhnFinish290RPM8862443129542216177214771108
M (DIFFICULT)or≤ 0.02≤ 2232348Fz0.00030.00070.00140.00180.00230.00240.0026
304, 304L, 316, 316L≤ 28 HRc(-)Feed (ipm)10.612.416.516.016.314.211.5
STAINLESS STEELS≤ 325 BhnFinish265RPM8098404926992025162013501012
(PH) 13-8 PH 15-5 PHor≤ 0.02≤ 2Fz0.00030.00070.00140.00180.00230.00240.0026
, , 17-4 PH, Custom 450≤ 35 HRc(212-318)Feed (ipm)9.711.315.114.614.913.010.5
SUPER ALLOYS (NICKEL COBALT≤ 300 BhnFinish80RPM24451222815611489407306
, , IRON BASE)or≤ 0.02≤ 2Fz0.00030.00070.00140.00180.00230.00240.0026
Inconel 601, 617, 625, Incoloy, Monel 400≤ 32 HRc(64-96)Feed (ipm)2.93.44.64.44.53.93.2
SUPER ALLOYS (NICKEL COBALT65RPM1986993662497397331248
, , IRON BASE)≤ 400 Bhn orFinish≤ 002≤ 2Fz0.00020.00060.00100.00140.00170.00180.0019
Inconel 718, X-750,.
Incoloy, Waspaloy, Hastelloy, Rene≤ 43 HRc(52-78)Feed (ipm)1.62.42.62.82.72.41.9
S TITANIUM ALLOYS≤ 350 BhnFinish300RPM9168458430562292183415281146
Pure Titanium, Ti6Al4V, Ti6Al2Sn4Zr2Moor≤ 0.02≤ 2Fz0.00040.00110.00210.00280.00340.00360.0039
, Ti4Al4Mo2Sn0.5Si≤ 38 HRc(240-360)Feed (ipm)14.720.225.725.724.922.017.9
TITANIUM ALLOYS (DIFFICULT)≤ 440 BhFinish105RPM320916041070802642535401
Ti10Al2Fe3Al, Ti5Al5V5Mo3Cr, Ti7Al4Mo,n or ≤ 47 HRc≤ 0.02≤ 2(84-126)Fz0.00040.00110.00210.00280.00340.00360.0039
Ti3Al8V6Cr4Zr4Mo, Ti6Al6V6Sn, Ti15V3 Cr3Sn3AlFeed (ipm)5.17.19.09.08.77.76.3

Bhn (Brinell) HRc (Rockwell C) rpm = Vc x 3.82 / D1 ipm = Fz x 4 x rpm