High chrome grinding ball

Diameter(mm)

Φ8

Φ10

Φ12

Φ15

Φ17

Φ20

Φ25

Φ30

Φ40

Φ50

Φ60

Φ70

Φ80

Φ90

Φ100

Φ110

Φ120

Φ130

Chemical Composition

Name

Designation

C

Si

Mn

Cr

P

S

Rare earth

High chrome casting alloy grinding ball

ZQCr12

2.0-3.3

≤1.0

0.5-1.5

≥10-14

≤0.08

≤0.08

Trace

Properties and Microstructure

Name

Designation

Surface Hardness（HRC

Core Hardness (HRC)

Impact Value(J/CM2)

Microstructure

Time of falling balls

High chrome casting alloy grinding ball

ZQCr12

≥58

≥56

2

M+C

≥15000

Tolerance of Diameter

Diameter

Φ10-Φ25

25<Φ<60

60<Φ≤100

100<Φ

Tolerance of Diameter

+1.0

+1.5

+2.0

+3.0

-1.0

-1.0

-1.0

-1.0