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51B60 Oil Hardened and Tempered Spring Steel Wires

51B60 Oil Hardened and Tempered Spring Steel Wires

51B60 Oil Hardened and Tempered Spring Steel Wires
CategoriesOil Hardened and Tempered Spring Steel Wires
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Brandfushun
Model51B60
Diameter10-40mm
Quality StandardASTM A29
Delivery ConditionOil Hardened and Tempered
Surface ConditionBlack suface,Blasted
FOB portTianjin port
Terms of PaymentL/C, D/A, D/P, T/T
Update Time2019-07-22
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

ASTM A29/A29M - 05 Standard Specification for Steel Bars, Carbon and Alloy, Hot-Wrought,  

Chemical Composition(%)

Steel Grade

C

Si

Mn

P

S

Cr

B

51B60

0.56-0.61

0.15-0.35

0.75-1.00

0.035max

0.040 max

0.70-0.90

0.0005 min

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 (%)

51B60

1225 min

1080 min

9 min

20 min

Heat Treatment

Steel Grade

Quenching Temperature (°C)

Media

Tempering Temperature (°C)

51B60

830-860

oil

460-520

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