Grade |
Equivalent |
Density |
HRA |
T.R.S |
Application |
YC4C | ? | 14.8 | >89.0 | >1800 | Mainly?used?as?small?buttons?for?precautions?bits?to?cut?soft?and?medium?hard?formations. |
? YC6 | ? K15-K20 | ? 14.8 | ? >90.0 | ? >2150 | For?coring?crowns,?electronic?coal?drill?bits,?coal?cutting?picks,? oil?cone?bits?and?scraping?knife?bits,?applied?in?geological?prospecting,?coal?mining?and?oil?well?boring. |
? YC8 | ? K30 | ? 14.8 | ? >89.5 | ? >2320 | 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. |
YK05 | ? | 14.8 | >90.5 | >2500 | Mostly?used?as?the?buttons?of?small?and?medium?sized?bits?to?drill?soft?and?medium?hard?formations. |
YC8C | ? | 14.7 | >88.5 | >2400 | |
? YK15 | ? | ? 14.6 | ? >87.6 | ? >2450 | Suitable?for?buttons?and?inserts?of?rotary?percussion?bits?to?cut?medium-hard?and?soft?formations. |
? YK20 | ? | ? 14.4 | ? >86.8 | ? >2500 | Primarily?for?the?buttons?and?inserts?of?rotary?percussion?bits?to?cut?medium-hard?and?hard?formations. |
? YK25 | ? | ? 14.4 | ? >87.2 | ? >2550 | Primarily?for?the?buttons?and?inserts?of?rotary?percussion?bits?to?cut?medium-hard?and?very?hard?formations. |