Carbide 4 Flutes Bull Nose End Mill Milling Tools Blue coating
| HRC | Grade | Density g/cm3 | Hardness HRA | Co Content % | Grain Size um | Bending Strength N/mm2 |
| 45 HRC | YG10X | 14.5 | 91.5 | 10 | 0.8 | 2800 |
| 55 HRC | ZK30UF | 14.5 | 92.0 | 10 | 0.6 | 3000 |
| 65 HRC | GU25UF | 14.5 | 93.0 | 12 | 0.4 | 4000 |
Good coating can improve tools life and production effiency, as well as slove the cutting problems.
| Coatings | Hardness HV | Thickness um | Friction Coefficient | Oxidation Temp | Color |
| AlTiN | 3500 | 2.5-3 | 0.3 | 900 | Black |
| TiAlN | 2800 | 2.5-3 | 0.3 | 900 | Violet |
| TiSiN | 3600 | 3 | 0.45 | 1000 | Copper |
| AlTiSiN | 400 | 3 | 0.4 | 1200 | Blue |
| TiN | 2500 | 2-3 | 0.5 | 600 | Gold |

