| STEELS |
POINT ANGLE |
SFM |
| Steel
< 180 HB |
118 |
80-110 |
| Steel
180-280 HB |
118 |
45-70 |
| Steel
280-380 HB |
135-140 |
30-45 |
| Steel
>380 HB |
135-140 |
15-25 |
| |
| STAINLESS STEEL |
POINT
ANGLE |
SFM |
| Stainless
steel 200-300 series |
135-140 |
20-40 |
| Stainless steel 400 series and PH |
118 |
30-60 |
| |
| CAST IRON |
POINT
ANGLE |
SFM |
| Gray
cast iron < 180 HB |
90 |
100-150 |
| Gray
cast iron 180-200 HB |
118 |
70-100 |
| Gray
cast iron - > 200 HB |
118 |
50-70 |
| Ductile/Nodular
cast iron |
118 |
70-80 |
| Cast
Iron - chilled |
135-140 |
25-35 |
| |
| HIGH-TEMP ALLOYS |
POINT
ANGLE |
SFM |
| Inconel 600 series |
135-140 |
15-30 |
| Inconel
X |
135-140 |
10-15 |
| Hastelloy |
135-140 |
15-30 |
| Titanium
and titanium alloys |
135-140 |
20-30 |
| A-286 |
135-140 |
15-25 |
| Monel |
118 |
40-50 |
| |
| NON-FERROUS |
POINT
ANGLE |
SFM |
| Aluminum
and aluminum alloys |
118 |
200-300 |
| Brass |
111 |
150-250 |
| Bronze |
118 |
100-200 |
| Copper |
118 |
100-200 |
