Q345B asye vs Q355B asye
Konpozisyon chimik (%) konparezon Q345B ak Q355B:
| Materyèl | C max. | Si max. | Mn max. | P max. | S max. | Cr max. | Ni max. | Cu max. | N max. | Nb max. | V max. | Ti max. | Mo max. |
| Q345B | 0.20 | 0.50 | 1.70 | 0.035 | 0.035 | 0.30 | 0.50 | 0.30 | 0.012 | 0.07 | 0.15 | 0.20 | 0.10 |
| Q355B | 0.20 | 0.55 | 1.60 | 0.030 | 0.030 | 0.30 | 0.30 | 0.40 | 0.012 | - | - | - | - |
Konparezon pwopriyete mekanik Q345B ak Q355B asye:
| Klas | Sede fòs MPa nan diferan epesè mm | ||||||||
| Mwens pase oswa egal a 16 | 16-40 | 40-63 | 63-80 | 80-100 | 100-150 | 150-200 | 200-250 | 250-400 | |
| Q345B | Pi gran pase oswa egal a 345 | Pi gran pase oswa egal a 335 | Pi gran pase oswa egal a 325 | Pi gran pase oswa egal a 315 | Pi gran pase oswa egal a 305 | Pi gran pase oswa egal a 285 | Pi gran pase oswa egal a 275 | Pi gran pase oswa egal a 265 | - |
| Q355B | Pi gran pase oswa egal a 355 | Pi gran pase oswa egal a 345 | Pi gran pase oswa egal a 335 | Pi gran pase oswa egal a 325 | Pi gran pase oswa egal a 315 | Pi gran pase oswa egal a 295 | Pi gran pase oswa egal a 285 | Pi gran pase oswa egal a 275 | - |
| Klas | Fòs rupture MPa nan diferan epesè mm | ||||||
| Mwens pase oswa egal a 40 | 40-63 | 63-80 | 80-100 | 100-150 | 150-250 | 250-400 | |
| Q345B | 470-630 | 470-630 | 470-630 | 470-630 | 450-600 | 450-600 | - |
| Q355B | 470-630 | 470-630 | 470-630 | 470-630 | 450-600 | 450-600 | - |
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