No.

Diameter

(mm)

Weight of each

(kg)

Pcs/ton

1

Ø20

0.0322

31056

2

Ø25

0.063

15873

3

Ø30

0.11

9091

4

Ø40

0.257

3891

5

Ø50

0.50

2000

6

Ø60

0.867

1153

7

Ø70

1.37

729

8

Ø80

2.05

487

9

Ø90

2.90

345

10

Ø100

4.00

250

11

Ø110

5.30

188

12

Ø120

6.80

147

13

Ø125

7.75

129

14

Ø130

8.74

114

Model

Mechanical properties

Microstructure

HRC

Times of falling (3.5m)

Low Chromium

≥45

8000

P+C

Medium Chromium

≥50

8000

P+C

High Chromium

≥56

8000

M+C

Model

Chemical Composition

C

Si

Mn

Cr

P

S

Low Chromium

2.3-3.4

≤1.5

0.5-1.5

1.0-2.0

≤0.1

≤0.1

Medium Chromium

2.2-2.8

0.5-1.0

0.5-0.8

10.0-12.0

≤0.1

≤0.1

High Chromium

2.4-3.2

0.5-0.8

0.5-0.8

16.0-18.0

≤0.1

≤0.1