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Soft Grade Materials

The following are base line recommendations.  Adjust your speeds and feeds according to your individual circumstances.  Call our technical support department for further assistance with speeds and feeds at 239-314-4303.
 
Feed (IPM) = RPM x CPT x # of flutes
RPM = SFM x 3.82/tool diameter
 

Material

SFM

1/8"

3/16"

1/4"

3/8"

1/2"

5/8"

3/4"

1"

Non-Ferrous

 









Aluminum Alloys

800-2000

.001

.002

.003

.004

.005

.006

.008

.010

Magnesium

800-1500

.001

.0015

.002

.003

.004

.006

.008

.009

Copper

800-1000

.001

.0012

.002

.0025

.003

.004

.004

.005

Copper Alloys

800-1000

.001

.0012

.002

.0025

.003

.004

.004

.005

Plastics, Acrylics

200-500

.001

.002

.003

.004

.006

.008

.010

.012

Carbon, Graphites

200-500

.002

.003

.004

.006

.008

.009

.010

.012

Stainless Steel








Precipitation

80-250

.0003

.0005

.001

.001

.002

.003

.004

.005

Austenitic

100-350

.0002

.0003

.0005

.001

.002

.0025

.0035

.0045

Martensitic

80-250

.0002

.0003

.0005

.001

.0015

.0025

.003

.004

High Temp Alloys








Cobalt Base

50-90

.0003

.0004

.0006

.0008

.0012

.0015

.002

.0025

Nickel Base

50-95

.0004

.0005

.0008

.001

.002

.0025

.003

.004

Iron Base

70-125

.0004

.0005

.001

.0015

.002

.0025

.003

.004


Material

SFM

1/8"

3/16"

1/4"

3/8"

1/2"

5/8"

3/4"

1"

Steels








High Strength Steels
4140, 4340, 6150

100-160

.0004

.0006

.001

.0015

.002

.0025

.003

.004

High Alloy - Die & Mold

100-160

.0004

.0006

.001

.0015

.0015

.0025

.003

.004

Medium Alloy

100-350

.0005

.0005

.001

.002

.0025

.0035

.004

.005

Low Alloy

100-350

.0005

.0007

.0012

.002

.003

.004

.005

.006

Cast Iron








Ductile Iron

120-350

.0005

.008

.0015

.002

.0022

.003

.004

.006

Cast Iron

120-300

.0005

.001

.002

.003

.004

.005

.006

.008

Titanium








Titanium

100-250

.0003

.0004

.0005

.001

.0015

.0025

.003

.004

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