Chemical Composition (%)
| C | Mn | Si | P | S | Ni | Cu | Mo | |
| Range | 0.07-0.12 | 1.60-2.10 | 0.5-0.8 | ≤0.025 | ≤0.025 | ≤0.15 | ≤0.5 | 0.4-0.6 |
| Test | 0.08 | 1.8 | 0.68 | 0.012 | 0.007 | 0.08 | 0.18 | 0.5 |
Melting metal mechanical performance
| Tensile strength Rm (Mpa) | Yield strength Rp0.2 (Mpa) | Elongation ratio (%) | AKV(-30℃) | Shielding gas | |||||||
| Range | 550-740 | ≥460 | ≥17 | ≥27 | CO2 (purity≥99.8%) | ||||||
| Test | 635 | 568 | 19 | 62 | |||||||
