|
Grade |
Density |
T.R.S |
Hardness |
Performance & application recommended |
Approx Grades in China |
|
g/cm3 |
MPα |
HRA |
|
MK4 |
15.1 |
1800 |
90.0 |
|
Mainly used as small buttons for percussion bits to cut soft and medium hard formations. |
|
YG4C |
|
MK6 |
14.9 |
2100 |
90.0 |
|
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. |
|
YG6 |
|
MK6 |
14.7 |
2400 |
89.5 |
|
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. |
|
YG8 |
|
MK15 |
14.0 |
2500 |
87.5 |
|
Good strength and less wear resistance, for bits of rotary hammer rock drills and heavy rock drills, for hard and very hard rocks. |
|
YG15 |
|
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. |
|
YG8C |
|
MK15 |
14.7 |
2450 |
87.8 |
Suitable to strips, conical buttons for rotary
percussion-resistant, geological prospecting
buttons, cut soft and medium hard formations.
|
YK15
YG9C |
|
MK20 |
14.4 |
2550 |
87.0 |
|
Primarily for the buttons and inserts of rotary percussion bits to cut medium-hard and hard formations. |
|
YG20
YG10C |
|
MK25 |
14.5 |
2600 |
87.5 |
|
Primarily for the buttons and inserts of rotary percussion bits to cut medium hard and very hard formations. |
|
YK25 |
|
MK30 |
14.4 |
2600 |
87.0 |
|
Largely for the inserts and buttons of percussion bits and tricone bits to cut medium-hard, hard, and very hard formations. |
|
YG11C |
|
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. |
|
YK40
YG13C |
|
MK50 |
14.0 |
2700 |
86.5 |
|
For oil cone drill bits, for medium soft and medium -hard rocks. |
|
YG15C |
Other grades may be offered by customers' requirements
