What is Spring Steel Wire?
Spring Steel wires are used for manufacturing tension and compression coil springs which are subjected to static or low-to-high dynamic stresses and even for Impact loaded springs e.g. Motorcycle Shockers, Car Seats etc.
Chemical Composition :
Grade | Carbon % | Silicon % | Manganese % | Sulphur % | Phosphorus % |
1 | 0.50-0.60 | 0.10-0.35 | 0.50-0.80 | 0.05 max | 0.05 max |
2 | 0.60-0.75 | 0.10-0.35 | 0.50-0.80 | 0.05 max | 0.05 max |
3 | 0.65-0.80 | 0.10-0.35 | 0.60-0.90 | 0.05 max | 0.05 max |
Size and SizeTolerance :
Dia Range (in mm) | Gr.I | Gr.II | Gr.III |
0.28-0.29 | +0.015 | +0.010 | +0.010 |
0.30-0.84 | +0.02 | +0.015 | +0.010 |
0.85-1.40 | +0.03 | +0.020 | +0.015 |
1.50-1.95 | +0.04 | +0.030 | +0.020 |
2.00-3.30 | +0.05 | +0.035 | +0.025 |
3.35-5.00 | +0.06 | +0.040 | +0.030 |
Tensile Strength :
Dia Range (in mm) |
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Note : 1 M Pa = 1 MM2 = 1 MN/M2 = 0.102 kgf/mm2
Reduction in Area/Torsion :
Dia (in mm) | % Reduction in Area | Minimum Torsion No. on L = 100 x dia in mm or 500 mm max. |
0.39-0.49 | - | - |
0.50-1.05 | - | 25 |
1.10-3.00 | 40 | 22 |
3.05-3.90 | 40 | 20 |
4.00 | 35 | 20 |
4.10-5.00 | 35 | 18 |
Wrapping Test : This test is applicable to wires of 0.50 mm or lesser diameter. Approx 500 mm long wire is tightly wound closely on an arbor equal to 3 times the diameter of the wire and then stretched to 5 times the original length of the coiled spring before being released. The test spiral shall show a uniform pitch.
Coil dimension/Coil weight :
Wire dia (in mm ) |
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Approx. Coil weight (kgs.) | ||||||||||||||||||||
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Packing : Coils are coated with Rust-preventive chemical & packed in polythene & Hessian.
Contact Person: Ms. Florence Tang
Fax: 86-731-89853933