Oil tempered chrome silicon vanadium steel wire

Oil tempered spring wire - High tensile strength

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trade, sales, commerce, marketing, distribution, oil tempered steel wire, tempered chrome silicon vanadium steel wire, oil tempered spring wire, tempered chrome silicon vanadium spring wire, high tensile strength properties, stress springs, suspension springs, truck brake system, EN 10270-2 FD SiCrV, EN 10270-2 FDSiCrV, DIN 17223/2 FD SiCr, DIN 50602, M method, coil end tested

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In compliance with:
EN 10270-2 FD SiCrV
similar to DIN 17223/2 FD SiCr

Utilization:
For static or moderate dynamic duty springs with high forces – i.e. suspension springs, truck brake system or similar utilization with high working regimes and good relaxation properties

Diameters:
3.00 - 18.50 mm

Chemical composition:

C	Si	Mn	P	S	Cu	V	Cr
0.50 - 0.70	1.20 - 1.65	0.40 - 0.90	≤0.030	≤0.025	≤0.12	0.10 - 0.25	0.50 - 1.00

Raw Material:
Wire rod from qualified international steelworks

Non metallic inclusions:
In compliance with DIN 50602, M method, for all kind of inclusions the maximum size is No. 2

Mechanical and technological properties:

Nominal diameter (a < Ø ≤ b) [mm]	Allowed deviations (±) [mm]	Tensile strength [N/mm²]	Minimum reduction [Z %]	Minimum number of twists Lo = 50 × d Min. 100% Right - Left
3.00 - 3.20	0.030	2110 - 2260	45	to be agreed upon
3.20 - 3.50	0.030	2110 - 2260	42	to be agreed upon
3.50 - 4.00	0.030	2060 - 2210	42	to be agreed upon
4.00 - 4.20	0.035	2060 - 2210	40	to be agreed upon
4.20 - 4.50	0.035	2060 - 2210	40	to be agreed upon
4.50 - 5.00	0.035	2010 - 2160	40	to be agreed upon
5.00 - 5.60	0.035	2010 - 2160	38	to be agreed upon
5.60 - 6.00	0.040	1960 - 2110	38	to be agreed upon
6.00 - 7.00	0.040	1960 - 2110	35	to be agreed upon
7.00 - 8.00	0.045	1910 - 2050	35	to be agreed upon
8.00 - 8.50	0.045	1890 - 2030	32	to be agreed upon
8.50 - 10.00	0.050	1870 - 2010	32	to be agreed upon
10.00 - 12.00	0.070	1830 - 1970	30	to be agreed upon
12.00 - 14.00	0.080	1790 - 1930	30	to be agreed upon
14.00 - 15.00	0.080	1780 - 1920	to be agreed upon	to be agreed upon
15.00 - 17.00	0.090	1760 - 1900	to be agreed upon	to be agreed upon
17.00 - 18.50	0.090	1740 - 1880	to be agreed upon	to be agreed upon

• Inline non destructive surface control on request
• Allowed depth of surface defects at the coil ends: max. 1.5% of wire diameter
• Allowed depth of surface decarburisation at the coil ends: max. 1.5% of wire diameter
• Maximum permissible tensile strength variation within one coil: 70 N/mm²
• Out of roundness: i.e. the difference between the maximum and minimum diameter of the wire at the same cross section is not more than 50% of the total permissible deviation in the diameter
• Yield point (limit 0.2%): minimum 90% of tensile strength
• Elastic modulus: E = 206 kN/mm² (nominal value)
• Shear modulus: G = 79,5 kN/mm² (nominal value)
• Heat treatment: after the coiling the springs should be stress relieved at T = 420 ± 5°C for 30 min; after shot peening should be stress relieved at T = 250 ± 10°C for 30 min

 

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Alloy	EN 10270-2	Stress
unalloyed	FD C	static
unalloyed	TD C	dynamic
unalloyed	VD C	hoch dynamic
SiCr-alloyed	FD SiCr	static
SiCr-alloyed	TD SiCr	dynamic
SiCr-alloyed	VD SiCr	highly dynamic
SiCr-alloyed	VD SiCr SC	highly dynamic
SiCrV-alloyed	FD SiCrV	static
SiCrV-alloyed	TD SiCrV	dynamic
SiCrV-alloyed	VD SiCrV	highly dynamic
SiCrV-alloyed	VD SiCrV SC	highly dynamic

 

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  For spring wire according to EN 10270-1, DIN 17223/1, please click here