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good cast steel balls
good cast steel balls

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Quality/Safety Certification: 0.00


high quality cast iron balls
1 good and High Quality Control
2,Prompt Delivery
3,Competitive Prices
4,SAE, ISO9001:2008

Type and Chemical composition of cast iron balls

Name

C

Mn

Si

Cr

S

P

Mo

Al

Microstructure

Speical Hi-Cr I

2.0-2.8

0.5-2.0

1.0max

22-32

0.06max

0.08max

mico

mico

M+C

Speical Hi-Cr II

2.0-2.8

0.5-2.0

1.0max

17-22

0.06max

0.08max

mico

mico

M+C

Speical Hi-Cr III

2.2-3.0

0.5-2.0

1.0max

15-17

0.06max

0.08max

mico

mico

M+C

High-Cr

2.2-3.2

0.5-2.5

1.0max

11-14

0.06max

0.08max

mico

mico

M+C

Medium-Cr

2.1-3.2

0.5-1.5

1.2max

5-10

0.06max

0.08max

mico

mico

P+C

Low-Cr

2.2-3.5

0.5-1.5

1.2max

1.5-3.0

0.06max

0.08max

mico

mico

P+C

 

Physical Property of cast iron balls

Name

Impact Test

AK.J/cm2

Endurance Test Times

(5m)

Dia 25mm-60mm

Dia 70mm-100mm

Surface

Core

Surface

Core

Speical Hi-Cr I

≥4

≥10000

≥60

≥49

≥60

≥48

Speical Hi-Cr II

≥4

≥10000

≥60

≥49

≥60

≥48

Speical Hi-Cr III

≥4

≥10000

≥60

≥49

≥58

≥48

High-Cr

≥3

≥10000

≥58

≥49

≥56

≥48

Medium-Cr

≥3

≥8000

 

≥48

 

≥48

Low-Cr

≥3

≥8000

 

≥46

 

≥45

Weight and Microstructure of cast iron Balls

Nominal diameter

Diametrical Tolerance(mm)

Approx. weight per ball(g)

Average number per MT

20mm

+1/-0.5

33

30303

25mm

+1/-0.5

64

15625

30mm

+2.0/-1.0

110

9090

40mm

+2.0/-1.0

261

3831

50mm

+2.0/-1.0

510

1961

60mm

+2.0/-1.0

883

1132

70mm

+3.0/-1.5

1402

713

80mm

+3.0/-1.5

2092

478

90mm

+3.0/-1.5

2980

335

100mm

+3.0/-1.5

4087

244

110mm

+3.0/-1.5

5440

183

120mm

+3.0/-1.5

7062

141

 

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