China · YB
20MnVB
YB/T 5221:2014 — Alloy structure steel round tube blank hot rolled and forged for making seamless tube
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| B | 0.0005 | 0.0035 | ||
| C | 0.17 | 0.23 | ||
| Mn | 1.2 | 1.6 | ||
| Si | 0.17 | 0.37 | ||
| V | 0.07 | 0.12 |
China · YB
YB/T 5221:2014 — Alloy structure steel round tube blank hot rolled and forged for making seamless tube
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| B | 0.0005 | 0.0035 | ||
| C | 0.17 | 0.23 | ||
| Mn | 1.2 | 1.6 | ||
| Si | 0.17 | 0.37 | ||
| V | 0.07 | 0.12 |