SUP7 Oil Hardened and Tempered Spring Steel Wires
SUP7 Oil Hardened and Tempered Spring Steel Wires
Model
SUP7

Item specifics

Diameter
10-40mm
Quality Standard
JIS G4801
Delivery Condition
Oil Hardened and Tempered
Surface Condition
Black suface,Blasted

Review

Description

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

SUP 7

0.56-0.64

1.80-2.20

0.70-1.00

0.030 max

0.030 max

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 7

1275 min

1180 min

5 min

25 min

Heat Treatment

Steel Grade

Quenching Temperature (°C)

Media

Tempering Temperature (°C)

SUP 7

870

oil

480