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