China · YB
45B
YB/T 037:1993 — Quality structure cold-draw flat steels
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| B | 0.0005 | 0.0035 | ||
| C | 0.42 | 0.49 | ||
| Cr | 0.3 | |||
| Mn | 0.6 | 0.9 | ||
| 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 drawnflats/bars, cold drawn or heat treated | ≥685 非标准数据,仅供参考 | ≥835 非标准数据,仅供参考 | ≥12 非标准数据,仅供参考 | ≥45 非标准数据,仅供参考 | HB ≤229 非标准数据,仅供参考;HB ≤255 非标准数据,仅供参考 |