Oil tempered chrome silicon steel wire valve quality

Oil tempered valve spring wire - Continuously tested - For high duty dynamic springs

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trade, sales, commerce, marketing, distribution, oil tempered steel wire, tempered chrome silicon steel wire, oil tempered spring wire, tempered chrome silicon spring wire, high duty dynamic springs, clutch springs, EN 10270-2 VD SiCr, EN 10270-2 VDSiCr, DIN 17223/2 VD, DIN 50602, M method, continuously tested

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In compliance with:
EN 10270-2 VD SiCr
DIN 17223/2 VD SiCr

Utilization:
For high duty dynamic stress – clutch springs or similar utilization, where good relaxation properties and heat resistance at high working temperature are requested

Diameters:
3.00 - 18.50 mm

Chemical composition:

C	Si	Mn	P	S	Cu	Cr
0.50 - 0.60	1.20 - 1.60	0.50 - 0.90	≤0.025	≤0.020	≤0.06	0.50 - 0.80

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

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	1910 - 2010	45	4
3.20 - 3.50	0.030	1910 - 2010	45	4
3.50 - 4.00	0.030	1860 - 1960	45	4
4.00 - 4.20	0.035	1860 - 1960	45	4
4.20 - 4.50	0.035	1860 - 1960	45	4
4.50 - 4.70	0.035	1810 - 1910	45	3
4.70 - 5.00	0.035	1810 - 1910	45	3
5.00 - 5.60	0.035	1810 - 1910	40	3
5.60 - 6.00	0.040	1760 - 1860	40	3
6.00 - 6.50	0.040	1760 - 1860	40	to be agreed upon
6.50 - 7.00	0.040	1710 - 1810	40	to be agreed upon
7.00 - 8.00	0.045	1710 - 1810	40	to be agreed upon
8.00 - 9.00	0.045	1670 - 1770	38	to be agreed upon
9.00 - 10.00	0.050	1670 - 1770	38	to be agreed upon
10.00 - 12.00	0.050	1620 - 1770	35	to be agreed upon
12.00 - 14.00	0.060	1580 - 1730	30	to be agreed upon
14.00 - 15.00	0.070	1570 - 1720	to be agreed upon	to be agreed upon
15.00 - 18.50	0.070	1550 - 1700	to be agreed upon	to be agreed upon

• Higher tensile values on request
• 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: 60 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