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Oil Tempered Steel Wire

CHEMICAL COMPOSITION - Steel Tempered in Oil and Quenched for Mechanical Springs EN 10270-2

  Chemical composition mass %
EN C Si Mn P S Cu Cr V
DESIG. STANDARD % % % max. % max. % max. % % %
FDC EN 10270-2 0.60-0.75 0.10-0.35 0.50-1.20 0.03 0.025 0.12 - -
FDSiCr EN 10270-2 0.50-0.60 1.20-1.60 0.50-0.90 0.03 0.025 0.12 0.50-0.80 -
FDSiCrV EN 10270-2 0.50-0.70 1.20-1.65 0.40-0.90 0.03 0.025 0.12 0.50-1.00 0.10-0.25
TDSiCr EN 10270-2 0.50-0.60 1.20-1.60 0.50-0.90 0.025 0.02 0.1 0.50-0.80 -
TDSiCrV EN 10270-2 0.50-0.70 1.20-1.65 0.40-0.90 0.02 0.02 0.1 0.50-1.00 0.10-0.25
VDSiCr EN 10270-2 0.50-0.60 1.20-1.60 0.50-0.90 0.025 0.02 0.06 0.50-0.80 -
VDSiCrV EN 10270-2 0.50-0.70 1.20-1.65 0.40-0.90 0.02 0.02 0.06 0.50-1.00 0.10-0.25

Wire rods used for TD and VD, with few impurities present

 
Approximate equivalent
EN US (AISI) Japan (JIS) CHINESE
DESIG. STANDARD ASTM JIS G3560 GB / T 18983
FDC EN 10270-2 A 229 SWO-A B FDC
FDSiCr EN 10270-2 A 401 SWOSC-B FDCrSi
FDSiCrV EN 10270-2 - - -
TDSiCr EN 10270-2 A 1000-5 Grade A - TDCrSi
TDSiCrV EN 10270-2 2 A 1000-5 Grade D - -
VDSiCr EN 10270-2 A 877 SWOSC-V VDCrSi
VDSiCrV EN 10270-2 - - -

MECHANICAL PROPERTIES

Steel for springs tempered in oil and quenched EN 10270-2:2011
Diameter of the wire Tensile strength Rm (N/mm2)
Nominal value mm FDC FDSiCr FDSiCrV TDSiCr TDSiCrV VDSiCr VDSiCrV
0.50 1900-2100 2100-2300 2280-2430 2080-2230 2230-2380 2080-2230 2230-2380
0.55 1900-2100 2100-2300 2280-2430 2080-2230 2230-2380 2080-2230 2230-2380
0.60 1900-2100 2100-2300 2280-2430 2080-2230 2230-2380 2080-2230 2230-2380
0.65 1900-2100 2100-2300 2280-2430 2080-2230 2230-2380 2080-2230 2230-2380
0.70 1900-2100 2100-2300 2280-2430 2080-2230 2230-2380 2080-2230 2230-2380
0.75 1900-2100 2100-2300 2280-2430 2080-2230 2230-2380 2080-2230 2230-2380
0.80 1900-2100 2100-2300 2280-2430 2080-2230 2230-2380 2080-2230 2230-2380
0.85 1860-2060 2100-2300 2280-2430 2080-2230 2230-2380 2080-2230 2230-2380
0.90 1860-2060 2100-2300 2280-2430 2080-2230 2230-2380 2080-2230 2230-2380
0.95 1860-2060 2100-2300 2280-2430 2080-2230 2230-2380 2080-2230 2230-2380
1.00 1860-2060 2100-2300 2280-2430 2080-2230 2230-2380 2080-2230 2230-2380
1.05 1810-2010 2070-2260 2280-2430 2080-2230 2230-2380 2080-2230 2230-2380
1.10 1810-2010 2070-2260 2280-2430 2080-2230 2230-2380 2080-2230 2230-2380
1.20 1810-2010 2070-2260 2280-2430 2080-2230 2230-2380 2080-2230 2230-2380
1.30 1810-2010 2070-2260 2280-2430 2080-2230 2230-2380 2080-2230 2230-2380
1.40 1790-1970 2060-2250 2260-2410 2060-2210 2210-2360 2060-2210 2210-2360
1.50 1760-1940 2040-2220 2260-2410 2060-2210 2210-2360 2060-2210 2210-2360
1.60 1760-1940 2040-2220 2260-2410 2060-2210 2210-2360 2060-2210 2210-2360
1.70 1730-1890 2000-2180 2210-2360 2010-2160 2130-2310 2010-2160 2130-2310
1.80 1730-1890 2000-2180 2210-2360 2010-2160 2130-2310 2010-2160 2130-2310
1.90 1730-1890 2000-2180 2210-2360 2010-2160 2130-2310 2010-2160 2130-2310
2.00 1730-1890 2000-2180 2210-2360 2010-2160 2130-2310 2010-2160 2130-2310
2.25 1670-1820 1970-2140 2160-2310 1960-2060 2100-2250 1960-2060 2100-2250
2.50 1670-1820 1970-2140 2160-2310 1960-2060 2100-2250 1960-2060 2100-2250
2.70 1640-1790 1950-2120 2110-2260 1910-2010 2060-2210 1910-2010 2060-2210
3.00 1620-1770 1930-2100 2110-2260 1910-2010 2060-2210 1910-2010 2060-2210
3.20 1600-1750 1910-2080 2110-2260 1910-2010 2060-2210 1910-2010 2060-2210
3.50 1580-1730 1900-2060 2110-2260 1910-2010 2010-2160 1910-2010 2010-2160
4.00 1550-1700 1870-2030 2060-2210 1860-1960 2010-2160 1860-1960 2010-2160
4.20 1540-1690 1860-2020 2060-2210 1860-1960 1960-2110 1860-1960 1960-2110
4.50 1520-1670 1850-2000 2060-2210 1860-1960 1960-2110 1860-1960 1960-2110
4.70 1510-1660 1840-1990 2010-2160 1810-1910 1960-2111 1810-1910 1960-2111
5.00 1500-1650 1830-1980 2010-2160 1810-1910 1690-2110 1810-1910 1690-2110
5.60 1470-1620 1800-1950 2010-2160 1810-1910 1910-2060 1810-1910 1910-2060
6.00 1460-1610 1780-1930 1960-2110 1760-1860 1910-2060 1760-1860 1910-2060
6.50 1440-1590 1760-1910 1960-2110 1760-1860 1910-2060 1760-1860 1910-2060
7.00 1430-1580 1740-1890 1960-2110 1710-1810 1860-2010 1710-1810 1860-2010
7.50 1400-1550 1710-1860 1910-2050 1710-1810 1680-2010 1710-1810 1680-2010
8.00 1400-1550 1710-1860 1910-2050 1710-1810 1680-2010 1710-1810 1680-2010
8.50 1380-1530 1700-1850 1890-2030 1670-1770 1810-1960 1670-1770 1810-1960
9.00 1360-1510 1660-1810 1870-2010 1670-1770 1810-1960 1670-1770 1810-1960
9.50 1360-1510 1660-1810 1870-2010 1670-1770 1810-1960 1670-1770 1810-1960
10.00 1360-1510 1660-1810 1870-2010 1670-1770 1810-1910 1670-1770 1810-1960
11.00 1320-1470 1620-1770 1830-1970 * * * *
12.00 1320-1470 1620-1770 1830-1970 * * * *
13.00 1280-1430 1580-1730 1790-1930 * * * *
14.00 1280-1413 1580-1730 1790-1930 * * * *
15.00 1270-1420 1570-1720 1780-1920 * * * *
16.00 1250-1400 1550-1700 1760-1900 * * * *
17.00 1250-1400 1550-1700 1760-1900 * * * *

* Under a commercial agreement.

 

USE OF DIFFERENT TYPES OF WIRE

Applicable standard EN 10270-2
This standard is applicable to all types of steel wires for tempered and quenched springs
TYPE DESCRIPTION
FDC Suitable for static applications.
FDSiCr
FDSiCrV
TDSiCr Steel wire for springs with medium fatigue levels, such as that required for alloy and non-alloy steel clutch springs.
TDSiCrV
VDSiCr Wire for alloy and non-alloy steel springs for use with severe dynamic stresses, such as springs for valves.
VDSiCrV

 

 

Tensile Strength (N/mm2) Vs Fatigue

* SOURCE STANDARD EN 10270-2

 

Tensile strength Static Medium fatigue High fatigue
Low FDC TDC VDC
Medium FDCrV TDCrV VDCrV
High FDSiCr TDSiCr VDSiCr
Very high FDSiCrV TDSiCrV VDSiCrV

 

 

CONDITIONING

Conditioning and measurements
Nominal value mm. Inner diameter (approx.) Outer diameter (approx.) Weight of the roll
1.40-1.99 600 mm. (24'') 850 mm. approx. 300 kg.
2.00-2.99 900 mm. (36'') 1100 mm. 500-1000 kg.
3.00-4.99 1200 mm. (48'') 1400 mm. 500-1000 kg.
5.00-8.00 1500 mm. (60'') 1800 mm. 500-1000 kg.
8.00-16.00 1800 mm. (72'') 2050 mm. 1000-2000 kg.

The material can be placed on racks and, if so, more than one roll per rack.
The rolls unwind in an ANTI-CLOCKWISE direction.
Diameters below 1.40mm and above 16.0mm on request

Surface quality EN 10270-1

For final diameters between 1.50 mm and 8.00 mm and for the VD-type wires, the wire can be trimmed or straightened (shaved).

 

Permissible depth of surface defects

Permissible depth of surface defects (mm).
Type of wire VD TD FD
C 0.005 d 0.008 d 0.010 d
SiCr, SiCrV 0.010 d 0.013 d 0.015 d

 

Permissible surface defects through Foucault current test (Eddy Current Test).

Tests are not normally performed for FD-type wires.
Nominal diameter d Maximum depth of the defect a)
mm VD TD
2.50 ≤ d ≤ 4.99 40 µm 60 µm
4.99 ≤ d ≤ 5.99 50 µm 60 µm
5.99 ≤ d ≤ 8.00 60 µm 0.01 d

a) ECT also possible for FD quality and diameters 8mm-16mm under a commercial agreement.

 

Surface decarburisation

Permissible depth of surface decarburisation (mm).
Type of wire VD TD FD
C 0.005 d 0.008 d 0.010 d
SiCr, SiCrV 0.010 d 0.013 d 0.015 d

We are able to supply special qualities and qualities not covered by any standards, under a commercial agreement.

 

 

TRIMMING

FDC On request
FDSiCr On request
FDSiCrV On request
TDSiCr On request
TDSiCrV On request
VDSiCr <2.5mm on request
VDSiCrV <2.5mm on request
 

Diameter tolerances. Permissible deviations according to EN 10270-2

DIAMETER OF THE WIRE
Nominal value mm Permissible deviations
0.50 ≤ d < 0.85 +/- 0.010
0.85 ≤ d < 1.05 +/- 0.015
1.05 ≤ d < 1.70 +/- 0.020
1.70 ≤ d < 3.00 +/- 0.025
3.00 ≤ d < 4.20 +/- 0.030
4.20 ≤ d < 6.00 +/- 0.035
6.00 ≤ d < 7.50 +/- 0.040
7.50 ≤ d < 9.00 +/- 0.045
9.00 ≤ d < 11.00 +/- 0.050
11.00 ≤ d < 13.00 +/- 0.070
13.00 ≤ d < 16.00 +/- 0.080
16.00 ≤ d ≤ 17.00 +/- 0.090

 

OVALITY

Ovality, i.e. the difference between the maximum diameter and the minimum diameter of the wire in the same cross section, must be no greater than 50% of the total permissible deviation specified in the mechanical properties.

 

 

LENGTH TOLERANCES OF THE CUT LENGTHS

STANDARD LENGTH TOLERANCES
NOMINAL LENGTH TOLERANCE
L < = 1000 mm. +/- 1 mm.
1000 < L < = 4000 - 0mm. / +3 mm.
* The data contained in this catalogue are for information purposes only and are not under any circumstances, contractual supply conditions. Errors and omissions excepted.
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