C

Si

Mn

Cr

Mo

Cu

Ni

P

S

2.0~3.0

≤ 1.0

0.5 ~ 1.5

13 ~ 17

0 ~ 3.0

0 ~ 1.0

0 ~ 1.5

≤ 0.10

≤ 0.06

Hardness HRC

Impact ductility (no gap)J/cm2

d ( Mpa )

56 ~ 66

≥ 5

500 ~ 800

cement

coal

Al mine

Wear and tear ( g )

30 ~ 50

30 ~ 50

450 ~ 800

Broken rate ( % )

≤ 1.0

≤ 1.0

≤ 1.0