Forged grinding ball/Cast grinding ball /Grinidng ball/Rolling steel ball

Type

Chemical Composition

Hardness

C

Mn

Si

P

S

Cr

CTI-B1

0.52-0.65

0.6-1.2

0.17-0.37

0.035max

0.035max

0.25max

55-65

CTI-B2

0.72-0.82

0.6-1.20

0.17-0.37

0.035max

0.035max

0.5-0.9

58-65

Type

Chemical Composition

Hardness

C

Mn

Si

P

S

Cr

CTI-B6

0.75-0.95

0.6-1.2

0.2-0.6

0.035max

0.035max

0.65-1.05

55-65

Chemical composition

Name

C

Si

Mu

Cr

P

S

Cu Mo Ai Ni Nb Zr V

Low Chromium alloyed cast balls

2.2-3.5

<=1.2

<=0.3-1.5

0.8-2.2

<=0.10

<=0.10

Trace

Medium chromium alloyed cast balls

2.0-3.3

<=1.2

<=0.3-1.5

4.9-9.0

<=0.10

<=0.10

Trace

High chromium alloyed cast balls

2.0-3.2

<=1.0

<=0.3-1.5

10-18

<=0.10

<=0.06

Trace

Extremly high chromium alloyed cast balls

2.0-3.2

<=1.0

<=0.3-2.0

28

<=0.10

<=0.06

Trace