China · YB
BL2
YB/T 4155:2006 — Hot-rolled round carbon steel bars and rods for standard parts
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.06 | 0.12 | ||
| Cr | 0.2 | |||
| Cu | 0.2 | |||
| Mn | 0.25 | 0.5 | ||
| Ni | 0.2 | |||
| P | 0.03 | |||
| S | 0.03 | |||
| Si | 0.1 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| round bars wire rod, hot rolled | ≥215 | 335–410 | ≥25 Lo = 11.3mm；≥33 |