Research Article
Specimen Test of Large-Heat-Input Fusion Welding Method for Use of SM570TMCP
Table 5
Results of tensile test in large-heat-input welding test (SM490TMCP).
| Steel type | Plate thickness (mm) | Preheat tem. (°C) | Interlayer tem. (°C) | Welding method | Input heat (kJ/cm) | Yield strength (0.2%, MPa) | Tensile strength (MPa) | Elongation (%) | Fracture part |
| SM490TMC | 35 | None | None | ESW | 61 | 354 354 | 558 532 | 33.4 32.7 | Weld Metal Base Metal | 56 | 342 352 | 518 563 | 31.7 35.5 | Weld Metal Weld Metal | 40 | None | Max. 250°C | SAW | 50 | 411 404 | 557 557 | 27.5 31.3 | Base Metal Base Metal | 70 | 355 405 | 555 561 | 29.9 31.4 | Base Metal Base Metal | FCAW | 50 | 419 416 | 553 574 | 21.3 23.0 | Base Metal Weld Metal | 80 | 50°C | Max. 250°C | SAW | 50 | 339 336 | 523 513 | 34.2 35.8 | Base Metal Base Metal | 70 | 342 355 | 519 529 | 34.2 35.8 | Base Metal Base Metal | FCAW | 50 | 348 344 | 528 527 | 28.1 30.0 | Base Metal Base Metal |
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