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Specifications

We're a leading manufacturer of spring steel flat bar, and we can do the smelting and rollind by our own factory. 

Spring steel flat bar
 
1. Material: 65Mn, 60Si2Mn, SUP9, SUP9A, SUP7, SUP10, SUP11, 55CrMnA, 60CrMnA,50CrV4,50CrVA etc.

2.Thickness: 6~35mm, Width: 40~150mm, Length: 2~8m, according to your requirements.
 
3. Surface: smooth plain; double grooved.
 
4. Standard: GB, ASTM, JIS
 
5. Usage: springs and chains for car and agriculture machines. Anchor plate. Laminated leaf spring.
 
6. Package: Standard export packing. Coverd by PP paper outside.
 
7. Chemical composition:
China
 
Components
HB=<
 
America
Japan
Germany
C
Si
Mn
Cr
V
B
P
S
 
 
 
 
 
 
 
 
 
 
 
=<
 
65Mn
1066
 
 
0.62-0.70
0.17-0.37
0.90-1.20
≤0.25
 
 
0.035
0.035
302
55Si2Mn
9255
 
55Si7
0.52-0.60
1.50-2.00
0.60-0.90
≤0.35
 
 
0.035
0.035
302
60Si2Mn
9260
SUP6
60Si7
0.56-0.64
1.50-2.00
0.60-0.90
≤0.35
 
 
0.035
0.035
321
60Si2MnA
9260
SUP6
60Si7
0.56-0.64
1.60-2.00
0.60-0.90
≤0.35
 
 
0.030
0.030
321
55CrMnA
5155
SUP9
55Cr3
0.52-0.60
0.17-0.37
0.65-0.95
0.65-0.95
 
 
0.030
0.030
321
60CrMnA
5160
SUP9A
 
0.56-0.64
0.17-0.37
0.70-1.00
0.70-1.00
 
 
0.030
0.030
321
50CrVA
6150
SUP10A
51CrV4
0.46-0.54
0.17-0.37
0.50-0.80
0.80-1.10
0.10-0.20
 
0.030
0.030
321
60CrMnBA
51B60
SUS11
58CrMnB4
0.56-0.64
0.17-0.37
0.70-1.00
0.70-1.00
 
0.0005-0.004
0.030
0.030
321
55SiMnVB
51B60
SUS11
58CrMnB4
0.52-0.60
0.70-1.00
0.70-1.00
≤0.35
0.08-0.16
0.0005-0.0035
0.030
0.030
321
60SiCrBA
 
 
 
0.56-0.64
1.40-1.80
0.40-0.70
0.90-1.20
0.10-0.20
 
0.030
0.030