Return Home Division of Commercial Grinding Services,Inc.
2100 Abbey Avenue, Cleveland, OH 44113
216-241-1340 | 800-379-1433
FAX: 216-241-6129
  

END MILL SPEEDS & FEEDS —
Recommendations for Solid Carbide
Material Speed End Mill Diameter Feed Per Tooth (inches)
    (SFM)   Up to 1/4”   Up to 1/2”   Up to 1”
Aluminum/Aluminum Alloys   600–1300   .0002-.002   .002-.004   .004-.008
Brass/Soft Bronze   400–700   .0005-.002   .002-.003   .003-.005
Bronze/High Tensile   250–400   .001-.002   .002-.003   .004-.006
Copper/Copper Alloys   350–900   .005-.002   0.002   .002-.006
Iron-Cast (soft)   200–500   .0005-.002   .002-.003   .003-.008
Iron-Cast (hard)   100–450   .0003-.001   .0008-.002   .003-.005
Iron-Ductile   80–400   .0002-.001   .001-.002   .002-.006
Iron-Malleable   250–600   .001-.002   .001-.003   .003-.008
Magnesium/Mag. Alloys   800–1400   .0005-.002   .002-.004   .004-.010
Monel/High Nickel Steel   150–300   .0002-.001   .001-.002   .002-.004
Nickel Base Hi-Temp Alloys   20–100   .0003-.0008   .0008-.001   .001-.002
Plastics   600–1200   .0006-.003   .003-.006   .006-.015
Plastics-Glass Filled   300–800   .0006-.003   .003-.004   .004-.012
Refractory Alloys   80–400   .0002-.001   0.001   .001-.002
Steel-Low Carbon   250–550   .0002-.001   .001-.003   .003-.007
Steel-Medium Carbon   100–250   .0004-.0015   .0015-.002   .002-.005
Steel: Up to Rc 35   150–250   .0005-.001   .001-.002   .002-.003
Steel: Rc 35 – Rc 50   80–150   .0003-.0007   .0007-.001   .002-.003
Steel: Rc 50 – Rc 60   25–120   .0002-.0005   .0005-.001   .001-.003
Steel-Mold   200–350   .0002-.001   .001-.002   .002-.006
Steel-Tool   100–300   .0002-.001   .001-.002   .002-.006
Stainless Steel-Soft   250–400   .0002-.001   .001-.002   .002-.006
Stainless Steel-Hard   50–250   .0002-.001   .001-.002   .001-.005
Titanium-Soft   120–350   .0002-.001   .001-.002   .002-.006
Titanium-Hard   30–150   .0002-.0005   .0005-.001   .001-.004
Plunge operations reduce feed per tooth 50 – 65%
Slotting applications surface speeds (sfm), should be reduced approximately 20%
     of the lowest value.
Light Radial depths of cut, the higher of the recommended surface speeds (sfm)
     should be used.
Greater Radial depths of cut (more than .5 x diameter), the lower range of surface
     speeds (sfm)  should be used.
Axial Depth of Cut: Recommendations are not to exceed 1-1/2 times the diameter.
     If this  conditions exists, Conventional Milling should be used and feed per tooth
     should be reduced by 50%.
 
PLEASE NOTE:  
The above recommendations should be considered only as a starting point;
“fine tuning” may be required in order to maximize performance
RPM – 3.82 x (SFM/Dia.)   SFM = .262 x Dia. x RPM
ipm = ipt x # Teeth x RPM   ipt = ipm/(RPM x # teeth)
ipm:  Inches Per Minute   ipt:  Inches Per Tooth

Use the following PDF Sheet for an easy print-out form of the above.

SPEEDS & FEEDS SPECS SHEET (PDF)