SUP9A Oil Hardened and Tempered Spring Steel Wires

Categories	Oil Hardened and Tempered Spring Steel Wires
Brand	fushun
Model	SUP9A
Dameter	10-40mm
Delivery Condition	Oil Hardened and Tempered
Surface Condition	Black suface,Blasted
FOB port	Tianjin port
Terms of Payment	L/C, D/A, D/P, T/T
Update Time	Apr 30,2025

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Detail Information

Products Details

1 High yield ratio, small spring residual deformation.

2 Stable performance: the difference of tensile strength in same coil is less than 60Mpa,which can extend the spring fatigue life.

3 The product rate after winding is high,which can reduce the cost. Oil quenching - tempering spring wire can not completely replace the cold-drawn spring wire. Especially the small size of the spring wire. Oil Hardened and Tempered spring wire is developed for the valve spring, suspension spring in fatigue resistance. And in order to achieve the best results, it should be combined with blasted process after winding. In recent years, with the improvement of the cognition level of this kind of product, this kind of product is gradually applied to clutch spring and car rigging.

Quality Standard

JIS G4801 2005 Spring Steels

Chemical Composition(%)

Steel Grade	C	Si	Mn	P	S	Cr
SUP 9A	0.56-0.64	0.15-0.35	0.70-1.00	0.030 max	0.030 max	0.70-1.00

Mechanical Properties(Quenched and Tempered Condition)(T=20°C if not differently stated)

Steel Grade	Tensile Strength Rm (Mpa)	Yield Strength Rp0.2 (Mpa)	Elongation A5 (%)	Area Reduction Ratio C (%)
SUP 9A	1225 min	1080 min	9 min	20 min

Heat Treatment

Steel Grade	Quenching Temperature (°C)	Media	Tempering Temperature (°C)
SUP 9A	830-860	oil	460-510