Carbon Alloy Steel

Spring Steel Flat Bar

    Thickness: 5-25mm


    Width: 30-300mm


    Length: customized

Spring steel, as its name suggests, is most commonly used in the manufacture of springs. When hardened and tempered (as supplied, or heat treated by the customer) it offer excellent spring characteristics. Spring steel flat bars are widely used on auto fittings, auto manufacturing, hardware tools, chain manufacturing and other machinery manufacturing industry. In order to meet the stable demand for different applications, Shanghai Metal Corporation has developed wide range of sizes to meet the requirements from customers. If you want to know more about our products, please feel free to contact us, we will reply you within 24 hours


Grade of Spring Steel Flat Bar

GB

ASTM

JIS

EN

C

Si

Mn

Cr

V

P

S

HB

65Mn

1566

S65C

C60E

0.62- 0.70

0.17- 0.37

0.90- 1.20

<0.25

  

0.035

0.035

302

60Si2Mn

9260

SUP7

61SiCr7

0.56- 0.64

1.50- 2.00

0.70-1.0

<0.35

  

0.025

0.025

321

60Si2MnA

9260

SUP7

61SiCr7

0.56- 0.64

1.60- 2.00

0.70-1.0

<0.35

  

0.025

0.025

321

55CrMnA

5155

SUP9

55Cr3

0.52- 0.60

0.17- 0.35

0.65- 0.95

0.65- 0.95

  

0.025

0.025

321

60CrMnA

5160

SUP9A

60Cr3

0.56- 0.64

0.17- 0.37

0.70- 1.00

0.70- 1.00

  

0.025

0.025

321

SOCrVA

6150

SUP10

51CrV4

0.46- 0.54

0.17- 0.37

0.50- 0.80

0.80- 1.10

0.10- 0.20

0.025

0.025

321

60Si2CrA

  

  

54SiCr6

0.56- 0.64

1.40- 1.80

0.40- 0.70

0.70- 1.00

  

0.025

0.025

321

28MnSiB

 

 

 

0.24- 0.32

0.60-1.2

1.2-1.6

B (0.0005-0.0035)

0.035

0.035

 

 

 

 

Steel Grade

GB

ISO

AISI

JIS

DIN

NF

20Cr

GB20Cr

20Cr4

5120

SCr22,SCrl20

20Cr4

-

30Cr

GB34Cr4

34Cr4

5130

SCr2,SCr430

34Cr4

34Cr4

35Cr

GB35Cr

34Cr4

5132

SCr3,SCr435

34Cr4

34Cr4

40Cr

GB40Cr

37Cr4

5140

SCr4,SCr440

41Cr4

41Cr4

45Cr

GB45Cr

41Cr4

5145

SCr5,SCr445

41Cr4

41Cr4

50Cr

GB50Cr

-

5150

SCr445

-

-

20CrMo

-

18CrMo4

-

SCM22.SCM430

-

25CrMo4

30CrMo

GB30CrMo

25CrMo4

4130

SCM2,SCM430

25CrMo4

25CrMo4

30CrMoA

GB30CrMoA

34CrMo4

4130

SCM430

34CrMo4

34CrMo4

35CrMo

GB35CrMo

34CrMo4

4137

SCM3,SCM435

34CrMo4

34CrMo4

42CrMo

GB42CrMo

42CrMo4

4140

SCM440

42CrMo4

42CrMo4

 

 

 

Chemical Composition of Spring Steel Flat Bar:

Steel Grade

Chemical Composition (%)

 

C

Mn

 Si                     

 S

P

Cr

Cu

Ni

# 45

0.42-0.50

0.50-0.80

0.17-0.37

≤0.035

≤0.035

≤0.25

≤0.25

≤0.30

# 50

0.47-0.55

0.50-0.80

0.17-0.37

≤0.035

≤0.035

≤0.25

≤0.25

≤0.30

# 55

0.52-0.60

0.50-0.80

0.17-0.37

≤0.035

≤0.035

≤0.25

≤0.25

≤0.30

# 60

0.57-0.65

0.50-0.80

0.17-0.37

≤0.035

≤0.035

≤0.25

≤0.25

≤0.30

# 70

0.67-0.75

0.50-0.80

0.17-0.37

≤0.035

≤0.035

≤0.25

≤0.25

≤0.30

65Mn

0.62-0.70

0.90-1.20

0.17-0.37

≤0.035

≤0.035

≤0.25

-

-

55Si2Mn

0.52-0.60

0.60-0.90

1.50-2.00

≤0.035

≤0.035

≤0.35

-

-

60Si2Mn

0.56-0.64

0.60-0.90

1.50-2.00

≤0.035

≤0.035

≤0.35

-

-

60Si2MnA

0.56-0.64

0.60-0.90

1.60-2.00

≤0.03

≤0.03

≤0.35

-

-

55CrMnA

0.52-0.60

0.65-0.95

0.17-0.37

≤0.03

≤0.03

0.65-0.95

-

-

60CrMnA

0.56-0.64

0.70-1.00

0.17-0.37

≤0.03

≤0.03

0.70-1.00

-

-

50CrVA

0.46-0.54

0.50-0.80

0.17-0.37

≤0.03

≤0.03

0.80-1.10

-

-

60CrMnBA

0.56-0.64

0.70-1.00

0.17-0.37

≤0.03

≤0.03

0.70-1.00

-

-

Packaging of Spring Steel Flat Bar - Leaf Spring:

Shanghai Metal Corporation Products are packed and labeled according to the regulations and customer's requests. Great care is taken to avoid any damage which might be caused during storage or transportation. In addition, clear labels are tagged on the outside of the packages for easy identification of the product I. D. and quality information.

1)SMC Standard 

2)Customization

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