Grade

Physical & mechanical properties(Typical values)

Recommended applications

g/cm3
Density

HRA
Hardness

N/mm2  

TRS

YG4C

15.13

90.2

1920

Suitable for mining and geological prospecting drill bits for drilling interlocked hard and soft rock formations, hand holding or shelf electrically driven drills for mining for drilling coal strong &hard and super hard formations .And for making auger tips for coal cutters

YG6

14.96

91.1

2200

Suitable for embedding electrically driven drill bits for drilling coal formations not containing common pyrite and coal formations. And for drilling non- silicon zed schist, Sylvie, rock salt and similar rock formations.

YG8

14.77

89.4

2350

Suitable for embedding core drilling drill bits for geological prospecting. oil well bits and scraper drills; For drilling soft rock formations under F=8,hard and super hard coal formations. For drilling nature stone materials, bricks and concrete walls.

YG8C

14.65

88.2

2560

Suitable for embedding coal cutters for drilling medium hard & hard coal formations and hard coal formations with horse under f=14; For embedding oil well drill bits and percussive drill bits for drilling hard rock formations

YK20.3

14.67

88.7

2380

It is an economical grade suitable for making drill bits for geological prospecting of coal mines, hand holding or shelf electrically driven drills for mining for drilling coal stone formations, hard and super hard coal formations. And for making auger tips for coal cutters.