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SA283 GrB American standard carbon structural steel plate, in accordance with ASME SA283/SA283M, is delivered in hot-rolled, TMCP, normalized and other states.
Melting analysis of chemical composition of SA283 GrB steel plate:
| Material | Thickness | C | Si | Mn | P | S | Cu |
| SA283 GrB | ≤40mm | ≤0.17 | ≤0.40 | ≤0.90 | ≤0.035 | ≤0.040 | ≥0.20 |
| ＞40 | ≤0.17 | 0.15-0.40 | ≤0.90 | ≤0.035 | ≤0.040 | ≥0.20 |
Mechanical properties of SA283 GrB steel plate:
| Grade | Tensile strength MPa | Yield strength MPa | 200mm Elongation A% | 50mm Elongation A% |
| SA283 GrB | 345-450 | ≥185 | 25 | 28 |
SA283 GrB steel plate smelting method:
Converter / electric furnace steelmaking → LF furnace refining → VD furnace vacuum degassing → continuous casting / die casting / electroslag → cleaning and heating → rolling → flaw detection → heat treatment → steel plate finishing → sampling → performance inspection
