7-11. Tables for Material Cutting Information
GENERAL SPEED RECOMM ENDATIONS
Material to be Cut
Cast Iron - Soft (Under 200 Brinnell)
Cast Iron - Med (200-300 Brinnell)
Cast Iron - Hard (Over 300 Brinnell)
Steel (Chrome Nickel 40 -45 Shore)
Steel (Stainless)
Steel (Low Carbon)
Steel (High Carbon)
Bronze (Medium)
Bronze (Hard)
Brass (Hard)
Copper
Duraluminum
Aluminum
Feet Per Minute
Rough
Rough
Cut
and
Finish
70
80-90
55
60-70
40
50-60
30
60
80
40
90
120
65
100
150
150
200
400
600
- 114 -
Light and
Finish
Cut
120
90
70
40
50
80
90
90
140
50
70
150
90
130
200
300
600
1000