Physical mechanics performance

Bending strength

        MPa

Grade

Density

Hardness

           Example in use

g/cm³

HRA

YB06

≥14.6

≥90.4

≥2000

It is applicable to set on bit of electric coal drill to drill

Into coal bed without pyrite and anthracite bed, and drill

Into schist, sylvine, halite, etc.

YB08

≥14.4

≥90.0

≥2000

It is applicable to set on core bit of geologic survey, oil

Well bit, drag type bit, hand-hold or fixed electric bit,

drill into soft rock bed under f=8, hard and extremely hard

coal bed, anthracite bed, and drilling hole on concrete wall.

YB10

≥14.2

≥89.0

≥2200

It is applicable to use on rock bit, drilling into medium-hard

and hard rock bed under f=14. It also use on coal cutter

tooth, oil well bit. It can drill into hard rock.

YB11

≥14.1

≥88.0

≥2250

It is applicable to use on impact& rotary rock bit ,drill

into medium hard and hard rock bed.

YB12

≥14.0

≥87.5

≥2350

It is applicable to use on impact& rotary rock bit ,drill

into medium hard and hard rock bed.

YB13

≥13.9

≥86.5

≥2600

It is applicable to set on drill bit of heavy rock hammer to

drill into extremely hard rock bed. It also can set on drill

bit on concrete wall drilling.