| Grade | Density | T.R.S | Hardness | Performance & application recommended |
|
| g/cm3 | MPα | HRA |
| MK4 | 15.1 | 1800 | 90 | Mainly used as small buttons for percussion bits to cut soft and |
| medium hard formations. |
| MK6 | 14.9 | 2000 | 90.5 | For coring crowns, electric coal drill bits, coal cutting picks, oil |
| cone bits and scraping knife bits, usd in geological prospecting, |
| coal mining and oil well boring. |
| MK8 | 14.7 | 2400 | 89.7 | For coring crowns, electric coal drill bits, coal cutting picks, cone |
| drill bits and scraping knife bits, used in geological prospecting, |
| coal mining and oil well boring. |
| MK10 | 14.7 | 2450 | 88.5 | Mostly used as the buttons of small and mediumsized percussion |
| bits and as the inserts of rotary prospecting bits to cut soft and |
| medium hard formations. |
| MK15 | 14.6 | 2450 | 87.8 | Suitable to strips, conical buttons for rotary percussion-resistant, |
geological prospecting buttons, cut soft and medium hard
formations. |
| MK20 | 14.4 | 2550 | 87 | Primarily for the buttons and inserts of rotary percussion bits
to cut |
| medium-hard and hard formations. |
| MK25 | 14.5 | 2600 | 87.5 | Primarily for the buttons and inserts of rotary percussion bits
to cut |
| medium hard and very hard formations. |
| MK30 | 14.4 | 2600 | 87 | Largely for the inserts and buttons of percussion bits and tricone |
| bits to cut medium-hard, hard, and very hard formations. |
| MK40 | 14.2 | 2650 | 86.5 | Predominatly for the buttons of tricone bits and inserts of rotary |
| percussion bits to cut hard and vey hard formations. |
| MK50 | 14 | 2700 | 86 | For oil cone drill bits, for medium soft and medium -hard rocks. |
| MK60 | 14 | 2500 | 87 | Good strength and less wear resistance, for bits of rotary
hammer |
| rock drills and heavy rock drills, for hard and very hard rocks. |
