Spring Steel Cold Rolled Steel Strip
Steel strip is a strip-shaped steel product with a thickness of ≤10mm, produced by steel rolling enterprises using hot-rolled or cold-rolled steel plates as raw materials through rolling into narrow and long strips, supplied in coils (narrow strip: width ≤600mm; wide strip: width >600mm). As a basic raw material for downstream manufacturing, it features high dimensional accuracy, convenient processing and material saving.
Core Classifications (by Process / Material / Application)
By Production Process (Primary Classification)
| Type | Hot-Rolled Steel Strip | Cold-Rolled Steel Strip |
|---|---|---|
| Rolling Condition | Rolled above recrystallization temperature (>450–600℃) | Rolled at room temperature, usually requiring annealing |
| Thickness Range | 0.8–12.0mm (mainstream: 2–6mm) | 0.05–3.6mm (precision grade up to 0.01mm) |
| Surface Condition | With oxide scale, dark gray, low finish | Smooth and flat surface, free of oxide scale |
| Dimensional Accuracy | Relatively low, large tolerance | Extremely high, small tolerance |
| Core Properties | Good plasticity, easy forming, low strength | Work-hardened, high strength/hardness, slightly low plasticity |
| Typical Applications | Building structures, bridges, automobile frames, engineering machinery | Automobile panels, home appliance shells, precision parts, springs |
