SM490YA steel plate for welded structure

SM490YA steel is Japanese standard hot-rolled welded structural steel, S stands for steel, M escape welding, 490 is the lower limit tensile strength 490MPa, A is the steel plate grade, and no impact is applied.

SM490YA steel grade is equivalent to the Chinese high weathering steel Q345GNH, but it is not the same, and its composition and properties are somewhat different. SM490YA steel plate executive standard: JISG 3106; SM490YA steel plate delivery status: hot rolled, normalized, quenched + tempered or tempered.

Chemical composition and melting analysis of SM490YA steel plate:

Grade	Thickness	C	Si	Mn	P	S
SM490YA	≤100mm	≤0.20	≤0.55	≤1.65	≤0.035	≤0.035

Mechanical properties of SM490YA steel plate:

Grade	Yield point or yield strength, N/m㎡				Tensile strength		Elongation
	Thickness mm				Thickness mm		Thickness mm	%
	≤16	16<t≤40	40<t≤75	75<t≤100	≤100	100<t≤200
SM490YA	≥365	≥355	≥335	≥325	490-610	-	≤5	≥19
							5<t≤16	≥15
							5<t≤50	≥19
							>40	≥21

SM490YA steel plate is a high-strength welded structural steel, used for bridges, ships, vehicles, petroleum storage tanks, containers and other structural parts that require excellent welding performance, and generally welded containers.