Description
About the CNMG 120408 HM PC9030 Grade
PC9030 is a PVD coated grade sitting in the ISO M25 to M35 range. It was developed for medium and heavy roughing with interrupted cutting in stainless steel, and it delivers strong resistance to chipping and to welding – the two failure modes that kill inserts in stainless.
That toughness is also why it works so well as a single-grade solution for a job shop. A grade that survives interrupted cuts in stainless will comfortably handle continuous cuts in mild steel. The reverse is not true, and that is why shops that standardise on a cheap steel grade end up scrapping inserts every time a stainless job comes in.
| Attribute | Value |
|---|---|
| Designation | CNMG 120408 HM |
| Grade | PC9030 |
| Insert shape | 80 degree rhombic (ISO C) |
| Clearance angle | N, zero degrees – negative, double sided |
| Cutting edge length | 12 mm nominal per ISO code |
| Inscribed circle | 12.7 mm |
| Thickness | 4.76 mm |
| Nose radius | 0.8 mm |
| Usable corners | 4 |
| Chipbreaker | HM, medium duty |
| Typical depth of cut | 0.5 to 5.5 mm |
| Typical feed | 0.12 to 0.45 mm per revolution |
| ISO grade range | M25 to M35 |
