| Grade |
Density
g/cm3 |
TRS
MPa |
Hardness
HRA |
Performance & application recommended |
| YG4C |
15.10 |
1800 |
90.0 |
Mainly used as small buttons for percussion bits to cut soft and medium hard formations. |
| YG6 |
14.95 |
1900 |
90.5 |
For coring crowns, electric coal drill bits, coal cutting picks, oil cone bits and scraping knife bits, used in geological prospecting, coal mining and oil well boring. |
| YG8 |
14.80 |
2200 |
89.5 |
For coring crowns, electric coal drill bits, coal cutting picks, oil cone bits and scraping knife bits, used in geological prospecting, coal mining and oil well boring. |
| YK05 |
14.95 |
2500 |
90.5 |
Mostly used as the buttons of small and medium sized percussion bits and as the inserts of rotary prospecting bits to cut soft and medium hard formations. |
| YG8C |
14.80 |
2400 |
88.5 |
| YK15 |
14.60 |
2450 |
87.6 |
Suitable to strips, conical buttons for rotary percussion-resistant, geological prospection buttons, cut soft and medium hard formations. |
| YK20 |
14.40 |
2500 |
86.8 |
Primarily for the buttons and inserts of rotary percussion bits to cut medium-hard and hard formations. |
| YK25 |
14.40 |
2550 |
87.2 |
Primarily for the buttons and inserts of rotary percussion bits to cut medium-hard and very hard formations. |
| YG11C |
14.40 |
2700 |
86.5 |
Largely for the inserts and buttons of percussion bits and tricone bits to cut medium-hard, hard, and very hard formations. |
| YG13C |
14.2 |
2850 |
86.0 |
Primarily for the buttons of tricone bits and inserts of rotary percussion bits to cut hard and very hard formations. |
| YG15C |
14.0 |
3000 |
85.5 |
For oil cone drill bits, for medium soft and medium-hard rocks. |
