Chemical Composition
Mechanical Properties
| Steel Grade | C | Si | Mn | P max | S max |
| 20# | 0.18-0.23 | 0.15-0.35 | 0.30-0.60 | 0.030 | 0.030 |
Mechanical Properties
| Steel Grade | Delivery Conditions | |||
| BK | BKS | |||
| Tensile Strength | Elongation | Tensile Strength | Elongation | |
| ≥ | ||||
| 10# | 410 | 6 | 335 | 12 |
| 20# | 510 | 5 | 430 | 10 |
| 35# | 590 | 4 | 520 | 8 |
| 45# | 645 | 4 | 610 | 7 |