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Recommended
Feeds & Speeds & Tool Selection Guidelines
For Roughing Applications
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MATERIAL
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RECOMMENDED
TOOL STYLE
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RECOMMENDED
COATING
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BHN
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SFM
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FPT 1/4” - 3/8” DIA
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FPT
1/2” - 5/8” DIA
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FPT
3/4” - 1” DIA
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ALUMINUM
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SER
102
SER 119
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ZrN,
TiCN, LASER
(coat per order)
|
80
|
1200
To Max
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.001
- .004
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.004
- .008
|
.008
- .020
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ALUMINUM
- HIGH SILICONE CONTENT
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SER
102
SER 119
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ZrN,
TiCN, AlTiN LASER (coat per order)
|
100
|
600
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.001
- .003
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.003
- .005
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.005
- .008
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CAST
IRON
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SER
100
SER 117
SER 120
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TiCN,
AlTiN
|
160
|
500
|
.001
- .002
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.002
- .004
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.005
- .006
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COPPER,
BRASS
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SER
102
SER 119
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TiCN,
ZrN, LASER (coat per order)
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100
|
750
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0.001
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0.002
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.004
- .006
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HIGH
TEMP ALLOYS - NICKELBASE (INCONEL, WASPALOY, RENE, HASTALOY)
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SER
101
SER 103
SER 120
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TiCN,
AlTiN
|
200
|
60
|
.0008
- .0012
|
.0012
- .0018
|
.0018
- .0025
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PLASTIC
- HIGH GLASS CONTENT
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SER
100
SER 120
|
AlTiN,
ZrN
|
--
|
550
|
.002
- .003
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.004
- .005
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.006
- .008
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PLASTIC AND COMPOSITES
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SER
100
SER 120
|
TiCN,
ZrN, LASER (coat per order)
|
--
|
1000+
|
.002
- .003
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.004
- .007
|
.008
- .012
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STEEL
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SER
100
SER 120
|
TiCN,
AlTiN
|
200
|
275
|
.001
- .002
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.002
- .003
|
.003
- .004
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STEEL,
STAINLESS
|
SER
100
SER 117
SER 120
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TiCN,
AlTiN
|
200
|
200
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.001
- .002
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.002
- .003
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.003
- .004
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STEEL,
TOOL
|
SER
100
SER 117
SER 120
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TiCN,
AlTiN
|
200
|
200
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0.001
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0.002
|
.003
- .004
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TITANIUM
|
SER
101
SER 103
SER 120
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TiCN,
AlTiN
|
275
|
160
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0.001
|
.002
- .003
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.004
- .006
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Roughing
Application Formulas
Speeds and
Feeds to be considered as a starting point. Values calculated
at:
Axial Cut (depth) = Diameter x 1.0
Radial Cut (width) = Diameter x .5 to Diameter x 1.0 (Full Slot)
Formulas:
Spindle Speed (RPM) = (3.82 x SFM) / Diameter
Feed (Inches Per Minute) = FPT (Feed per Tooth) x RPM x Number
of Flutes
Example: For
starting speed using a ½” 4 flute end mill cutting Titanium at
a hardness of around 275 BHN, find SFM on above chart (SFM=160)
and calculate RPM using formula as follows: RPM = 3.82 x 160 (SFM)
/ .5 (DIA) = 1222 RPM.
For starting feed: .002 (FPT) x 1222 (RPM) x 4 (Flutes) = 9-3/4
IPM .
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