End Mills
GARR TOOL VRX/VHM Series End Mills Application Guide

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Fractional
Material Rc SFM
(Vc)
CHIPLOAD PER FLUTE Recommendations (Fz) *Profiling

Radial
Slotting

Axial
1/8 " 3/16" 1/4" 5/16" 3/8" 1/2" 5/8" 3/4" 1"
Stainless Steel: 303   290-375 .0004"-.0008" .0008"-.0010" .0010"-.0015" .0013"-.0020" .0015"-.0020" .0020"-.0030" .0025"-.0035" .0030"-.0040" .0035"-.0045" 1 x D 1 x D
Stainless Steel:
304, 316,
400 Series,
Kovar, Invar
  250-300 .0003"-.0006" .0006"-.0010" .0008"-.0015" .0010"-.0020" .0012"-.0020" .0015"-.0020" .0020"-.0025" .0025"-.0030" .0025"-.0035" 1 x D 1 x D
Stainless Steel:
304L, 316L,
17/4, 15/5, 13/8,
PH Materials
< 35
> 35
250-300
200-250
.0003"-.0006"
.0003"-.0006"
.0006"-.0008"
.0006"-.0008"
.0007"-.0010"
.0007"-.0010"
.0010"-.0015"
.0008"-.0010"
.0015"-.0020"
.0010"-.0015"
.0015"-.0025"
.0010"-.0020"
.0020"-.0030"
.0015"-.0025"
.0025"-.0035"
.0020"-.0030"
.0030"-.0040"
.0020"-.0030"
1 x D
.5 x D
1 x D
.5 x D
High Temperature Alloys: Inconel 625/718, A286 < 35
> 35
125-175
80-100
.0004"-.0008"
.0003"-.0006"
.0008"-.0010"
.0007"-.0010"
.0010"-.0015"
.0008"-.0010"
.0012"-.0020"
.0010"-.0015"
.0020"-.0025"
.0010"-.0015"
.0025"-.0030"
.0010"-.0015"
.0030"-.0035"
.0012"-.0020"
.0030"-.0035"
.0015"-.0025"
.0030"-.0040"
.0015"-.0025"
.5 x D
.2 x D
.3 x D
.2 x D
Titanium: 6AL4V, CP   150-200 .0004"-.0008" .0008"-.0010" .0010"-.0015" .0010"-.0020" .0015"-.0020" .0020"-.0030" .0025"-.0030" .0030"-.0035" .0030"-.0040" 1 x D 1 x D
Carbon Steels:
1000 Series
< 35
> 35
400-600
275-425
.0004"-.0008"
.0003"-.0006"
.0008"-.0010"
.0006"-.0008"
.0010"-.0015"
.0008"-.0012"
.0010"-.0020"
.0010"-.0015"
.0015"-.0020"
.0010"-.0020"
.0020"-.0030"
.0015"-.0025"
.0025"-.0035"
.0020"-.0025"
.0030"-.0040"
.0020"-.0030"
.0035"-.0045"
.0025"-.0035"
.3 x D
.3 x D
.5 x D
.5 x D
High Strength
Tool Steel:
4130, 4140, A2,
D2, P20, H13
< 30 250-350 .0003"-.0006" .0006"-.0010" .0008"-.0015" .0010"-.0020" .0012"-.0020" .0015"-.0022" .0020"-.0025" .0025"-.0030" .0025"-.0035" .5 x D 1 x D
30-38 150-200 .0003"-.0006" .0006"-.0008" .0007"-.0010" .0008"-.0010" .0010"-.0015" .0010"-.0020" .0015"-.0025" .0020"-.0030" .0020"-.0030" .3 x D 1 x D
> 38 (SEE HIGH ROCKWELL CHART - PAGE 198)
Gray Cast Iron   400-500 .0005"-.0010" .0010"-.0020" .0010"-.0020" .0015"-.0020" .0015"-.0025" .0020"-.0035" .0025"-.0035" .0030"-.0040" .0040"-.0050" 1 x D 1 x D
 
Metric
Material Rc M/Min.
(Vc)
CHIPLOAD PER FLUTE-Metric Recommendations(Fz) *Profiling

Radial
Slotting

Axial
1/8 " 3/16" 1/4" 5/16" 3/8" 1/2" 5/8" 3/4" 1"
Stainless Steel: 303   90-115 .010-.020 .020-.025 .025-.038 .033-.050 .038-.050 .050-.076 .063-.089 .076-.102 .089-.114 1 x D 1 x D
Stainless Steel:
304, 316,
400 Series,
Kovar, Invar
  75-90 .008-.015 .015-.025 .020-.038 .025-.050 .030-.050 .038-.050 .050-.063 .063-.076 .063-.089 1 x D 1 x D
Stainless Steel:
304L, 316L,
17/4, 15/5, 13/8,
PH Materials
< 35
> 35
75-85
60-75
.008-.015
.008-.015
.015-.020
.015-.020
.018-.025
.018-.025
.025-.038
.020-.025
.038-.050
.025-.038
.038-.063
.025-.050
.050-.076
.038-.063
.063-.089
.050-.076
.076-.102
.050-.076
1 x D
.5 x D
1 x D
.5 x D
High Temperature Alloys: Inconel 625/718, A286 < 35
> 35
40-55
25-30
.010-.020
.008-.015
.020-.025
.018-.025
.025-.038
.020-.025
.030-.050
.025-.038
.050-.063
.025-.038
.063-.076
.025-.038
.076-.089
.030-.050
.076-.089
.038-.063
.076-.102
.038-.063
.5 x D
.2 x D
.3 x D
.2 x D
Titanium: 6AL4V, CP   45-60 .010-.020 .020-.025 .025-.038 .025-.050 .038-.050 .050-.076 .063-.076 .076-.089 .076-.102 1 x D 1 x D
Carbon Steels:
1000 Series
< 35
> 35
125-185
85-130
.010-.020
.008-.015>
.020-.025
.015-.020
.025-.038
.020-.030
.025-.050
.025-.038
.038-.050
.025-.050
.050-.076
.038-.063
.063-.089
.050-.063
.076-.102
.050-.076
.089-.114
.063-.089
.3 x D
.3 x D
.5 x D
.5 x D
High Strength
Tool Steel:
4130, 4140, A2,
D2, P20, H13
< 30 75-110 .008-.015 .015-.025 .020-.038 .025-.050 .030-.050 .038-.056 .050-.063 .063-.076 .063-.089 .5 x D 1 x D
30-38 45-60 .006-.015 .015-.020 .018-.025 .020-.025 .025-.038 .025-.050 .038-.063 .050-.076 .050-.076 .3 x D 1 x D
> 38 (SEE HIGH ROCKWELL CHART - PAGE 198)
Gray Cast Iron   125-150 .013-.025 .025-.050 .025-.050 .038-.050 .038-.063 .050-.089 .063-.089 .076-.102 .102-.127 1 x D 1 x D