Endmill

Grade

Density
g/cm3

TRS
MPa

Hardness
HRA

Performance & application recommended

YG4C

15.10

1800

90.0

Mainly used as small buttons for percussion bits to cut soft and medium hard formations.

YG6

14.95

1900

90.5

For coring crowns, electric coal drill bits, coal cutting picks, oil cone bits and scraping knife bits, used in geological prospecting, coal mining and oil well boring.

YG8

14.80

2200

89.5

For coring crowns, electric coal drill bits, coal cutting picks, oil cone bits and scraping knife bits, used in geological prospecting, coal mining and oil well boring.

YK05

14.95

2500

90.5

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

YG8C

14.80

2400

88.5

YK15

14.60

2450

87.6

Suitable to strips, conical buttons for rotary percussion-resistant, geological prospection buttons, cut soft and medium hard formations.

YK20

14.40

2500

86.8

Primarily for the buttons and inserts of rotary percussion bits to cut medium-hard and hard formations.

YK25

14.40

2550

87.2

Primarily for the buttons and inserts of rotary percussion bits to cut medium-hard and very hard formations.

YG11C

14.40

2700

86.5

Largely for the inserts and buttons of percussion bits and tricone bits to cut medium-hard, hard, and very hard formations.

YG13C

14.2

2850

86.0

Primarily for the buttons of tricone bits and inserts of rotary percussion bits to cut hard and very hard formations.

YG15C

14.0

3000

85.5

For oil cone drill bits, for medium soft and medium-hard rocks.