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steel wirespring steel wire   

一.Steel wire technological process 

1.Technological process of charcoal spring steel wire, knitting steel wire, hairpin steel wire, general steel wire, core drawing aluminum rivet steel wire
Raw materials
—》
Superficial treatment
—》
Drawing
—》
Heat treatment
—》
Superficial treatment
—》
Drawing
—》
Checking and sorting
—》
Storehouse
GB/T4357-1989Charcoal Steel Spring Wire GB/T4357-1989 and High-carbon Steel Wire JISG3521-1988 Regulations

Steel

No

Chemical composition ( % )

C

Mn

Si

S

P

Ni

Cr

Cu

70

0.68-0.74

0.50-0.80

0.17-0.37

≤ 0.02

≤ 0.03

≤ 0.25

≤ 0.10

≤ 0.20

Steel wire diameter and regulations allowed deviation should meet

diameter

allowable deviation

diameter

allowable deviation

>0.14-0.30

± 0.01

>1.00-3.00

± 0.02

>0.30-0.60

± 0.01

>3.0-6.0

± 0.03

>0.60-1.00

± 0.02

>6.00-11.00

± 0.045


diameter

Tensile strength Mpa

B

C

D

0.16

2150-2550

2500-2890

2690-3090

0.18

2150-2550

2450-2840

2690-3090

0.20

2150-2550

2400-2790

2690-3090

0.22

2110-2500

2350-2750

2690-3090

0.25

2060-2450

2300-2700

2640-3040

0.28

2010-2400

2300-2700

2640-3040

0.30

2010-2400

2300-2700

2640-3040

0.32

1960-2350

2250-2650

2600-2990

0.35

1960-2350

2250-2650

2600-2990

0.40

1910-2300

2250-2650

2600-2990

0.45

1860-2260

2200-2600

2550-2940

0.50

1860-2260

2200-2600

2550-2940

0.55

1810-2210

2150-2550

2500-2890

0.60

1760-2160

2110-2500

2450-2840

0.63

1760-2160

2110-2500

2450-2840

0.70

1710-2110

2060-2450

2450-2840

0.80

1710-2060

2010-2400

2400-2840

0.90

1710-2060

2010-2350

2350-2750

1.00

1660-2010

1960-2300

2300-2690

1.20

1620-1960

1910-2250

2250-2550

1.40

1620-1910

1860-2210

2150-2450

1.60

1570-1860

1840-2160

2110-2400

1.80

1520-1810

1760-2110

2010-2300

2.00

1470-1760

1710-2010

1910-2200

2.20

1420-1710

1660-1960

1810-2110

2.50

1420-1710

1660-1960

1760-2060

2.80

1370-1670

1620-1910

1710-2010

3.00

1370-1670

1570-1860

1710-1960

3.20

1320-1620

1570-1810

1660-1910

3.50

1320-1620

1570-1810

1660-1910

4.00

1320-1620

1520-1760

1620-1860

4.50

1320-1570

1520-1760

1620-1860

5.00

1320-1570

1470-1710

1570-1810

5.50

1270-1520

1470-1710

1570-1810

6.00

1220-1470

1420-1560

1520-1760

6.30

1220-1470

1420-1610

7.00

1170-1420

1370-1570

8.00

1170-1420

1370-1570

9.00

1130-1320

1320-1520

10.00

1130-1320

1320-1520

11.00

1080-1270

1270-1470

12.00

1080-1270

1270-1470

13.00

1030-1220

1220-1420

 
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