Name | Spring steel coil |
Heat treatment | Quench 830 °C ± 20 °C, oil cooling; tempering 540 °C ± 50 °C |
Tensile strength σb (MPa): ≥ 980 (100),Yield strength σs(MPa): ≥784(80), | |
Width | Elongation δ10(10%):≥8,Section shrinkage ψ(%):≥30,Hardness: Hot Rolling, |
Finish | ≤302HB;Cold Pull+Heat Treatment,≤321HB. |
Packing | Export standard packing or according to customers’ requirement |
Certificate | ISO9001:2008 |
Shipment | Within10-15 workdays,25-30days when the quantity beyond 1000tons |