Specimen Test of Large-Heat-Input Fusion Welding Method for Use of SM570TMCP

Table 6

Results of tensile test in large-heat-input welding test (SM570TMCP).

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
SM570TMC	35	None	None	ESW	80	445; 460	610; 624	25.2; 26.5	Weld Metal; Weld Metal
					120	456; 466	616; 625	22.4; 24.5	Weld Metal; Weld Metal
	40	50°C	Max. 250°C	SAW	70	579; 583	660; 655	22.6; 24.2	Weld Metal; Weld Metal
					100	567; 530	652; 648	19.3; 22.7	Weld Metal; Weld Metal
				FCAW	60	535; 531	606; 407	19.1; 15.9	Weld Metal; Weld Metal
	80	50°C	Max. 250°C	SAW	70	452; 455	611; 627	29.8; 34.0	Base Metal; Base Metal
				FCAW	60	532; 529	604; 589	25.5; 29.7	Weld Metal; Weld Metal
	100	50°C	Max. 250°C	SAW	70	554; 561	627; 639	23.3; 36.0	Weld Metal; Base Metal
				FCAW	60	499; 502	597; 596	22.7; 22.5	Weld Metal; Weld Metal