Grades

Density(g/cm³)

Hardness (HRA)

T·R·S (N/mm2)

Application

YG4C

15.00

89.5

1800

Mainly used as small buttons for percussion bits and as the inserts of rotary prospecting bits to cut soft, medium-hard formations.

YG6

14.80

90.0

1700

Mainly used as the buttons of small and medium-sized percussion bits and as the inserts of rotary prospecting bits to cut soft, medium-hard formations.

YG8

14.70

88.5

2200

Mainly used as the buttons of small and medium-sized percussion bits and as the inserts of rotary prospecting bits to cut soft, medium-hard formations.

YG8C

14.70

88.0

2300

Mainly used as the buttons of small and medium-sized percussion bits and as the inserts of rotary prospecting bits to cut soft, medium-hard formations.

YG9C

14.60

87.0

2400

Mainly used as the inserts and buttons for rotary-percussive bits, coal-cutting bits and tri-cone bits to cut medium-hard and hard formations.

YG11C

14.40

86.5

2450

Mainly for the inserts and buttons of heavy rock drill bits and rotary-percussive bits, coal-cutting bits and tri-cone bits to cut medium-hard and hard formations.

YG13C

14.30

86.0

2500

Mainly used as the inserts and buttons of tri-cone bits rotary-percussive bits and heavy rock drill bits to cut medium-hard and hard formations.

YG15

14.20

86.5

2500

It is stronger, and is mainly used as the inserts and buttons of rotary-percussive bits, heavy rock drill bits to cut hard and very hard formations.

YG16

14.10

85.5

2600

It is mainly used for making cemented carbide substrate tips to be used in PDC cutters for excavating coal and oil field PDC bits.

YG20

13.70

85.0

2800

Mainly for the stamping dies used in the conditions of heavy impact load and large stress.