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Oil Hardened and Tempered Spring Steel Wire

    Steel grade: 55CrSi, VDSiCr, FDSiCr,60Si2Mn,65MN,SAE9254V.etc

    Size: 1.4-16mm

    Surface: Black+Oiled

Oil Tempered Spring wire is produced by taking usually a silicon-chrome steel and hardening inline to tensiles of around 2000MPa. Oil tempered wire is used widely in the automotive industry for a number of different applications but predominantly suspension springs and valve springs. There are different classes of oil tempered wires, and they are classified according to the fatigue stress/kinetic requirements of the spring. For example, valve springs will be exposed to high levels of kinetic movement and so requires VD quality material. The specification for VD requires all wire to be final Eddy Current Tested to ensure that any inclusions in the wire are found and highlighted to the spring manufacturer. The number of inclusions found in the wire can be greatly reduced by shaving the wire rod prior to drawing. This is where around 20-40 microns of material is removed from the outer surface of the wire, therefore physically removing inclusions. Wire can then be further processed to super clean.

Shanghai Metal Corporation is a professional manufacturer and supplier of Oil Hardened and Tempered Spring Steel 

Wire with high quality and reasonable price. If you want to know more about Oil Hardened and Tempered Spring 

Steel Wire products or Oil Hardened and Tempered Spring Steel Wire price please feel free to contact us, we will reply 

you within 24 hours.

Details of Oil Hardened and Tempered Spring Steel Wire:

Steel grade: 55CrSi, VDSiCr, FDSiCr,60Si2Mn,65MN,SAE9254V.etc.
Size:  1.4-16mm
Surface: Black+Oiled .
Coil weight: 2000 kg
Usage: For making screw springs,railway springs,OTMB springs and  so  on 
Package: Waterproof membrane + PVC +steel truss or depends on customer's requirment
Wire rod process flow:Bllets RHF-Water descaling-Rolling Laying head Conti ol cooling Finishing,Packing,Warehousing.

Chemical Composition (mass fraction)  %

Code C Si Mn P max. S max. Cr V Cu max.







0.030 0.030     0.20
TDC 0.020 0.025 0.12
FDSiMn 0.56-0.64 1.50-2.00 0.60-0.90 0.035 0.035     0.25







0.030 0.030



TDCrSi 0.025 0.025 0.12

Mechanical and technological properties and quality requirments for wire grades FDC, FDCrV, FDSiCr and FDSiCrV

Nominal wire diameter Permissible deviations Tensile strength Rm  /MPa
/mm /mm FDCb FDCrVb FDSiCrb FDSiCrVb
0.80 ±0.015 1860-2060 1960-2160 2100-2300 2280-2430
1.00 ±0.020 1810-2010 1900-2100 2070-2260 2280-2430
1.30 1790-1970 1870-2070 2060-2250 2260-2410
1.40 1760-1940 1840-2030 2040-2220 2260-2410
1.60 ±0.025 1720-1890 1790-1970 2000-2180 2210-2360
2.00 1670-1820 1750-1900 1970-2140 2160-2310
2.50 1640-1790 1720-1870 1950-2120 2110-2260



1620-1770 1700-1850 1930-2100 2110-2260
3.00 1600-1750 1680-1830 1910-2080 2110-2260
3.20 1580-1730 1660-1810 1900-2060 2110-2260
3.50 1550-1700 1620-1770 1870-2030 2060-2210



1540-1690 1610-1760 1860-2020 2060-2210
4.20 1520-1670 1590-1740 1850-2000 2060-2210
4.50 1510-1660 1580-1730 1840-1990 2010-2160
4.70 1500-1650 1560-1710 1830-1980 2010-2160
5.00 1470-1620 1540-1690 1800-1950 2010-2160



1460-1610 1520-1670 1780-1930 1960-2110
6.00 1440-1590 1510-1660 1760-1910 1960-2110
6.50 1430-1580 1500-1650 1740-1890 1960-2110
7.00 ±0.045 1400-1550 1480-1630 1710-1860 1910-2050
8.00 1380-1530 1470-1620 1700-1850 1890-2030
8.50 ±0.050 1360-1510 1450-1600 1660-1810 1870-2010
10.00 ±0.070 1320-1470 1430-1580 1620-1770 1830-1970
12.00 ±0.080 1280-1430 1420-1570 1580-1730 1790-1930
14.00 1270-1420 1410-1560 1570-1720 1780-1920
15.00 ±0.090 1250-1400 1400-1550 1550-1700 1760-1900
b    1 Mpa =1 N/mm2

Packaging of Oil Hardened and Tempered Spring Steel Wire:

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




To meet the entirety of our customers business needs, Shanghai Metal Corporation offers its services as a “One-Stop Shop” for business services including Purchasing, Value-Added Manufacturing, Packaging/Labeling, and Delivery. Shanghai Metal Corporation prides itself on achieving superior results and satisfying customer needs. In this, we earnestly strive to fulfill our role as trustworthy and reliable supplier of business services throughout the entire world.

Our Value-Added Manufacturing Services not only save our customer time from having to out-source, but also spare them the cost of dealing with several disparate shops and deadlines. 

Oil Tempered Spring wire for suspension applications where the fatigue stresses are not as high use a FD or TD class of material. For FD class of material, eddy current test is not essential and is often not specified by spring manufacturers, as the risk for failure in static applications is not as high as for springs with high kinetic stresses. It is vital that high quality wire rod is used for oil tempered wires as the number of inclusions from poorer quality rod manufacturers can be high, therefore increasing the risk of a spring failure.

Another application for oil tempered wire is for clutch springs. This is classed as medium to high fatigue stress and TD is usually specified for this application. TD is final ECT reducing the chance of inclusions being used in the spring, reducing the risk of a failure greatly.


Advantages of Oil Hardened and Tempered Spring Steel Wire

Can be customized as customer’s requirement.

High tensile strength

The surface is smooth and flawless

The production line has passed the environmental assessment

More than ten years of working experience

More than 100 customers trust

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