Note: Series 538 end mills have been designed
for heavier than average feed rates. In fact, running them at slower
than recommended feed rates can seriously degrade performance. When
in doubt, increase feed rates to the maximum capabilities of your
machine and fixturing.
| Material |
Uncoated
SFM |
TiCN
Coated SFM |
Chip Load Per Tooth By Cutting Diameter |
| 1/2" |
3/4" |
1" |
1-1/4" |
2" |
Aluminum
(Soft/Gummy) |
250
- 500 |
400
- 2,500 |
.005" |
.007" |
.010" |
.012" |
.015" |
Aircraft
Aluminum Alloys (Less Than
10% Silicon) |
250
- 750 |
500
- 3,250 |
.005" |
.007" |
.010" |
.012" |
.015" |
Aluminum Alloys
(More Than
10% Silicon, Wrought & Cast) |
Not Recommended |
| Copper
Alloys (Long Chip) |
250
- 500 |
350
- 1,500 |
.005" |
.007" |
.009" |
.012" |
.015" |
| Copper
Alloys (Short Chip) |
150
- 250 |
200
- 1,250 |
.003" |
.006" |
.008" |
.010" |
.013" |
