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Contact information

Products

Name:

Hot rolling steel cylpebs

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Description

1.Size and Tolerance

Size (mm)

20x30

25x35

30x40

35x45

40x50

45x55

50x60

55x65

60x70

Diameter tolerance(mm)

±1

Length tolerance(mm)

±2

 

2.Chemical composition

Brand

C(%)

Si(%)

Mn(%)

Cr(%)

Cu(%)

Mo(%)

P(%)

S(%)

Ni(%)

45#

0.42-0.50

0.17-0.37

0.5-0.80

0-0.25

0-0.25

0-0.30

0-0.035

0-0.035

0-0.30

60Mn

0.57-0.65

0.17-0.37

0.70-1.0

0-0.25

0-0.25

0-0.30

0-0.035

0-0.035

0-0.30

65Mn

0.62-0.70

0.17-0.37

0.90-1.0

0-0.25

0-0.25

0-0.30

0-0.035

0-0.035

0-0.30

B-2

0.70-0.80

0.17-0.37

0.70-0.80

0.50-0.60

0-0.25

0-0.30

0-0.035

0-0.035

0-0.30

 

3.Technical specification

Brand

Breakage rate

Hardness(HRC)

Impact value(J/cm2 )

Drop times(times)

Micro structure

45#

<1%

≥45

≥12

≥8000

M+C

60Mn

<1%

≥55

≥12

≥12000

M+C

65Mn

<1%

≥58

≥12

≥12000

M+C

B-2

<1%

≥60

≥12

≥15000

M+C

 

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