China · GB
25
GB 711:1988 — Hot-rolled quality carbon structural steel sheets and wide strips
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.22 | 0.3 | ||
| Cr | 0.25 | |||
| Cu | 0.25 | |||
| Mn | 0.5 | 0.8 | ||
| Ni | 0.25 | |||
| P | 0.035 | |||
| S | 0.04 | |||
| Si | 0.17 | 0.37 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| heavy plate, steel strip, Heat treated, > 4 <= 60 mm | ≤450 | ≤24 | ||||
| hot rolled steel plates, steel strip, heat treated | ≥450 非标准数据，仅供参考 | ≥24 非标准数据，仅供参考 |