Oil Tempered Steel Wire

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
0,8 ~ 1.99	550 ~ 650	900 ~ 1000	300
1,5 ~ 4,99	680 ~ 1050	1150 ~ 1450	1000
5.00 ~ 8.00	950 ~ 1400	1350 ~ 1850	1000
8.00 ~ 16.00	1800	2300	1000-2000

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

CHEMICAL COMPOSITION – STEEL TEMPERED IN OIL AND QUENCHED FOR MECHANICAL SPRINGS EN 10270-2

EN		C	Si	Mn	P	S	Cu	Cr	V
		Chemical composition mass %
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

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.

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

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	–	–	–

OIL-HARDENED STEEL WIRE: INCREASED HARDNESS AND TOUGHNESS

MECHANICAL CHARACTERISTICS AND SPECIFICATIONS

Oil tempered steel wire is achieved by heating the workpiece to a high temperature and then cooling it in an oil bath. This hardens the material and improves its resistance to deformation and abrasion. At VINCO we have available a wide range of chemical compositions of quenched and tempered steel wire based on the EN 10270-2 standard which applies to quenched and tempered spring steel wires.

In the mechanical characteristics section of the product data sheet you can find out what each type of hardened steel wire is used for, as well as the tensile strength of all of them. The inner and outer diameter measurements and the weight of the coil according to the nominal value in millimetres are also detailed.

PACKAGING OPTIONS FOR THE SUPPLY OF HARDENED STEEL WIRE

The following table details the different packaging options according to the maximum weight that we offer you:

Type of packaginge	Maximum weight in kg
Roll	500
Sling Bar / Carrier	2000
Coil Z	800
Metallic reel DIN 560 G200/32	150
Metallic reel G200/40	150
Metallic reel G240/40	300
Wooden reel G240/40	300
Rods	–

In addition to these types of packaging, in the supply of oil-hardened steel wire we offer different possibilities to adapt to the needs of each customer, such as the type of palletisation – square or round – and the orientation of the coil axis – horizontal or vertical axis. Along with these packaging and supply options, at VINCO we have different protection elements to preserve all the properties of our wires during the shipping process: cover, VCI damp-proof paper, VCI damp-proof plastic, phytosanitary packaging, maritime packaging and damp-proof sacks.

FINISHES AND TOLERANCES

In order to determine the finish of the oil-hardened steel wire, a number of properties to be defined at the time of ordering must be taken into account:

Surface quality of the material according to EN 10270-1 which applies to mechanical spring steel wires.
Permissible depth for surface defects depending on the type of wire.
Surface defects determined by the Eddie-current test using electromagnetic currents on a non-destructive basis.
Surface decarburisation measured in millimetres.
Shave on request.

On the other hand, in the tolerances section of the technical data sheet we have detailed, according to the wire diameter, the nominal value in millimetres and the admissible deviations registered in the EN 10270-2 Standard. The ovality is another aspect to be taken into account, which must not exceed 50% of the total admissible deviation. Finally, the standard length tolerances are also specified in the same section. Consult our complete technical data sheet and get all the information you need.