
| N | egative Ins | ert Geometr | y | Positi | ve Insert Ge | ometry | |
| cutting condition | -FF | -ML | -UR | ..MA | -FP | -MU | -MP |
| heavily interrupted cut | WK20CT | WK20CT | WK20CT | WK20CT | WK20CT | WK20CT | WK20CT |
| lightly interrupted cut | WK20CT | WK20CT | WK20CT | WK20CT | WK20CT | WK20CT | WK20CT |
| varying depth of cut, casting, or forging skin | WK20CT | WK05CT | WK20CT | WK05CT | WK20CT | WK20CT | WK20CT |
| smooth cut, pre-turned surface | WK20CT | WK05CT | WS10PT | WK05CT | WK20CT | WK20CT/ WK05CT/ WS10PT | WK20CT |
WS10PT
| Grey Cast Iron | speed — m/min | Starting Conditions | |
| material |
group grade 60 180 305 430 550 675 800 920 1040 1160 m/min
WK05CT 450 K1 WK20CT 300
Ductile, Compacted Graphite, and Malleable Cast Irons
| (<600 MPa tensile strength) | speed — m/min | Starting Conditions | |
| material |
| group | grade | 90 | 135 | 180 | 225 | 275 | 320 | 360 | 410 | 460 | 500 | m/min |
| WS10PT | 200 | |||||||||||
| K2 | WK05CT | 360 |
WK20CT 240
Ductile, Malleable, and Austempered Cast Irons
| (>600 MPa tensile strength) | speed — m/min | Starting Conditions | |
| material |
| group | grade | 90 | 135 | 180 | 225 | 275 | 320 | 360 | 410 | 460 | 500 | m/min |
| WS10PT | 150 | |||||||||||
| K3 | WK05CT | 240 |
WK20CT 210