
| Grade | Thickness(mm) | Min Yield (Mpa) | Tensile(MPa) | Elongation(%) | 
| SA516 Gr.55 | 6mm-40mm | 205Mpa | 380-515Mpa | 27% | 
| 40mm-100mm | 205Mpa | 380-515Mpa | 23% | 
| Main chemical elements composition of A516 Grade 55 | |||||
| Thickness(mm) | C | Si | Mn | P | S | 
| T≤12.5 | 0.18 | 0.13-0.45 | 0.55-0.98 | 0.035 | 0.035 | 
| 12.5<T≤50 | 0.20 | 0.55-1.30 | |||
| 50<T≤100 | 0.22 | ||||
| 100<T≤200 | 0.24 | ||||
| T>200 | 0.26 | ||||