China · GB
50
GB/T 13237:1991 — Cold-rolled quality carbon structural steel sheets and strips
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.47 | 0.55 | ||
| Cr | 0.25 | |||
| Cu | 0.25 | |||
| Mn | 0.5 | 0.8 | ||
| Ni | 0.3 | |||
| P | 0.035 | |||
| S | 0.035 | |||
| Si | 0.17 | 0.37 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| cold rolled steel plates, steel strip, heat treated | 540–715 非标准数据，仅供参考 | ≥14 普通拉延级.A为δ10的值. 非标准数据，仅供参考 |