Recommended Starting Cutting Conditions

Material

Chip load ( in / flute )

Speed ( SFM )

1018 CRS Bhn 175-225	.0008 - .002	250 - 500
4140 Alloy Bhn 275-325	.0005 - .002	175 - 350
303 Stainless Steel	.0005 - .0035	250 - 500
440 Stainless Steel	.0002 - .0015	125 - 300
Cast Iron gray	.0005 - .003	400 - 800
Ductile Iron	.001 - .005	600 - 1000
Aluminum Alloy	.0015 - .006	800 - 1200
Brass ( Leaded )	.002 - .0065	400 - 700
Mold Steel P1 - P21	.0003 - .0018	300 - 500
Nitriding Steel 135M	.0004 - .0035	200 - 350