China · GB
50
GB/T 13237:2013 — 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 |
|---|---|---|---|---|---|---|
| 1.5mm < t ≤ 2mm | 470–590 | ≥14 Lo=80 mm | ||||
| 1mm < t ≤ 1.5mm | 470–590 | ≥13 Lo=80 mm | ||||
| 2mm < t ≤ 2.5mm | 470–590 | ≥14 Lo=80 mm | ||||
| t > 2.5mm | 470–590 | ≥15 Lo=80 mm |