RECOMMENDED GRADES AND PROPERTIES
| Grade | Content Co / wt% | Hardness (HRA) | Density (g/cm²) | Traverse rupture strength (Mpa) | Applications |
| GQ0605 | 6 | 90,0 | 14,95 | 2600 | Suitable for production of small and medium size mining bits used to drill medium hard rock stratum. |
| GQ0805 | 8 | 90,0 | 14,65 | 2800 | Universal. Suitable for production of mining bits. |
| GQ0905 | 9 | 89,0 | 14,50 | 2700 | Suitable for drilling medium hard rock stratum hardness under F12. |
| GQ1005 | 10 | 88,0 | 14,35 | 2900 | Suitable for drilling medium hard rock stratum hardness under F14. |
| GQ1006 | 10 | 87,5 | 14,35 | 2500 | Suitable for drilling rock stratum with hard rock seam hardness F3 to F6 |
