Grade

Physical mechanics properties

Useage and illustration

Density g/cm3

Hardness HRC

Flexural strength MPa

YB06

≥14.6

≥89.0

≥1700

Be suitable for making inlayed electric aiguille for coal,which can drill into coal seam without pyrite and into anthracite seam,or into schist,potassium,halite and other similar terrane.

YB08

≥14.4

≥88.5

≥1750

Be suitable for inlayed aiguille for drilling the core in geological prospecting,scraper aiguille for drilling the brick of oil well,electric aiguille of holding type or support type,all of which can be used for drilling into soft terrane under f=8,hard coal seam,extremely hard coal seam and anthracite seam,or for processing natural stone and the holing of brick and concrete walland etc.

YB10

≥14.2

≥88.0

≥1850

Be suitable for inlayed borer bit of impacting and gyrating or roating and impacting rock breaker,to drill into middling rigidity and hard terrane under f=14;for coal cutter tooth that cut hard stone coal seam containing,aiguille of oil well;impacting aiguille that dig into the hard rock or processing hard stone.

YB11

≥14.1

≥87.5

≥1900

Be suitable for inlayed borer bit of impacting and gyrating rock breaker,to drill into midding rigid or hard terrane.

YB12

≥14.0

≥87.0

≥2050

Be suitable for inlayed borer bit of impacting and gyrating rock breaker,to drill into midding rigid or hard terrane.

YB13

≥13.9

≥86.0

≥2150

Be suitable for inlayed pinhead alike brand form or column tooth fo heavy-duty rock drill machine,each kind of wheel aiguille;and also for the aiguille of drlling stone wall or concrete of building installation.