4340 Steel - Milling

INCH

Diameter
SFM
IPT
0.750 - 1.000
100 - 250 SFM
0.0030 - 0.0040
0.625 - 0.750
100 - 250 SFM
0.0025 - 0.0030
0.500 - 0.625
100 - 250 SFM
0.0020 - 0.0025
0.250 - 0.500
100 - 250 SFM
0.0010 - 0.0020
0.125 - 0.250
100 - 250 SFM
0.0005 - 0.0010
0.000 - 0.125
100 - 250 SFM
0.0000 - 0.0005

Warning

Always use the speeds and feeds recommended from your tool manufacturer. Easy Speeds And Feeds only serves as a starting point and educational site.

 
 

4340 Steel - HSS Drills

INCH

diameter
SFM
IPR
0.750 - 1.000
20 - 60 SFM
0.010 - 0.011
0.500 - 0.750
20 - 60 SFM
0.008 - 0.010
0.250 - 0.500
20 - 60 SFM
0.004 - 0.008
0.125 - 0.250
20 - 60 SFM
0.003 - 0.004
0.000 - 0.125
20 - 60 SFM
0.000 - 0.003

Warning

Always use the speeds and feeds recommended from your tool manufacturer. Easy Speeds And Feeds only serves as a starting point and educational site.

 

4340 Steel - Carbide Drills

INCH

Diameter
SFM
IPR
0.750 - 1.000
50 - 150 SFM
0.010 - 0.012
0.500 - 0.750
50 - 150 SFM
0.008 - 0.010
0.250 - 0.500
50 - 150 SFM
0.005 - 0.008
0.125 - 0.250
50 - 150 SFM
0.003 - 0.005
0.000 - 0.125
50 - 150 SFM
0.000 - 0.003

Warning

Always use the speeds and feeds recommended from your tool manufacturer. Easy Speeds And Feeds only serves as a starting point and educational site.

 

4340 Steel - Carbide Reamers

INCH

Diameter
SFM
IPR
0.750 - 1.000
40 - 100 SFM
0.024 - 0.028
0.500 - 0.750
40 - 100 SFM
0.018 - 0.024
0.250 - 0.500
40 - 100 SFM
0.012 - 0.018
0.125 - 0.250
40 - 100 SFM
0.005 - 0.012
0.000 - 0.125
40 - 100 SFM
0.000 - 0.005

Warning

Always use the speeds and feeds recommended from your tool manufacturer. Easy Speeds And Feeds only serves as a starting point and educational site.

 

4340 Steel - Carbide Thread Mill

INCH

Diameter
SFM
IPT
0.5000 - 0.7500
200 - 450 SFM
0.0018 - 0.0032
0.3750 - 0.5000
200 - 450 SFM
0.0015 - 0.0018
0.2500 - 0.3750
200 - 450 SFM
0.0010 - 0.0015
0.1875 - 0.2500
200 - 450 SFM
0.0006 - 0.0010
0.1250 - 0.1875
200 - 450 SFM
0.0003 - 0.0006
0.0000 - 0.1250
200 - 450 SFM
0.0000 - 0.0003

Warning

Always use the speeds and feeds recommended from your tool manufacturer. Easy Speeds And Feeds only serves as a starting point and educational site.