Oil tempered chrome silicon vanadium steel wire valve quality - Superclean

Oil tempered valve spring wire - High tensile strength - For extremely dynamic duty

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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 VD SiCrV SC, EN 10270-2 VDSiCrV SC, DIN 17223/2 VD, DIN 50602, M method, continuously tested

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In compliance with:
EN 10270-2 VD SiCrV SC

Utilization:
For extremely 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	≤ 0.020	≤ 0.020	≤ 0.06	0.10 - 0.25	0.50 - 1.00

Raw Material:
Wire rod from qualified international steelworks

Non destructive defect control:
In line tested wire on the whole length for surface defects of minimum depth of 40, 50 or 60 µm

Remark:
On request the wire can be shaved

Non metallic inclusions:
In compliance with DIN 50602, Max T method, the following max. numbers of non-metallic inclusions are guaranteed:

Inclusion size (microns)	5 - 10	10 - 15	≥15
Number of inclusions	≤50	≤7	0

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	0.025	2060 - 2210	45	4
3.20 - 3.50	0.025	2010 - 2160	45	4
3.50 - 4.00	0.025	2010 - 2160	45	4
4.00 - 4.20	0.030	1960 - 2110	45	3
4.20 - 4.50	0.030	1960 - 2110	45	3
4.50 - 5.00	0.030	1960 - 2110	40	3
5.00 - 5.60	0.030	1910 - 2060	35	3
5.60 - 6.50	0.035	1910 - 2060	35	3
6.50 - 7.00	0.035	1860 - 2010	35	to be agreed upon
7.00 - 8.00	0.040	1860 - 2010	35	to be agreed upon
8.00 - 9.00	0.040	1810 - 1960	35	to be agreed upon
9.00 - 10.00	0.045	1810 - 1960	35	to be agreed upon
10.00 - 12.00	0.050	1770 - 1910	35	to be agreed upon
12.00 - 14.00	0.060	1770 - 1910	30	to be agreed upon
14.00 - 15.00	0.060	1770 - 1910	to be agreed upon	to be agreed upon
15.00 - 17.00	0.070	1730 - 1860	to be agreed upon	to be agreed upon
17.00 - 18.50	0.070	1730 - 1860	to be agreed upon	to be agreed upon

• Allowed depth of surface defects at the continuouslys: max. 1.0% of wire diameter
• Allowed depth of surface decarburisation at the continuouslys: max. 1.0% of wire diameter
• Maximum permissible tensile strength variation within one coil: 50 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	high duty dynamic
unalloyed	TD C	dynamic
unalloyed	VD C	hoch dynamic
SiCr-alloyed	FD SiCr	high duty dynamic
SiCr-alloyed	TD SiCr	dynamic
SiCr-alloyed	VD SiCr	highly dynamic
SiCr-alloyed	VD SiCr SC	highly dynamic
SiCrV-alloyed	FD SiCrV	high duty dynamic
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