Grade

Density

g/cm³

Hardness

HRA

TRSN/

mm2

Applications recommended

YG6

14.85-15.05

89.5

1670

Suitable for making geological prospecting drill bits and mining inserts for light electrical drills for drilling soft rock and coal formations and drill bits for drilling un-silicated rock formations.

YG8

14.65-14.85

89.0

1840

YG8C

14.55-14.75

87.5

2000

JK10

14.20-14.60

88

1850

YK15

14.45-14.75

87

2030

Suitable for inserts for heavy duty rock excavating machines for drilling hard and super hard rock formations and it can also be used for making tri-cone button bits.

YK20

14.40-14.60

86

2460

YK25

14.40-14.60

86.5

2550

YG11C

14.20-14.40

86.5

2260

Used for making buttons and tri-cone and percussive drill bits for drilling hard and super hard rock formations and it can also be used for making inserts in other drill bits.

YK40

14.10-14.30

85.5

2400

With super toughness and corresponding wear resistance, it is suitable for mining inserts in mine prospecting, in heavy duty rock drilling machines and depth drilling bits for drilling hard and super hard rock formations and it can also be used for other button bits.

YK50

13.90-14.10

85

2360