SM520 Low-Alloy Steel Plate

SM520 steel plate is the Japanese industrial standard welded structural rolled steel, belongs to the Japanese standard low alloy high-strength structural steel plate.SM520 steel plate grades SM520B,SM520C, SM520 steel plate heat treatment, if required, the steel can be normalized, quenched and tempered or tempered heat treatment. In addition, according to the agreement between the supply and demand sides, heat treatment such as controlled rolling and controlled cooling can also be carried out.

SM520 Low Alloy Steel Material Chemical Composition:

Grade	Chemical Composition
	C max	Si max	Mn	P max	S max
SM520B	0.20	0.55	1.6 max	0.035	0.035
SM520C	0.20	0.55	1.6 max	0.035	0.035

 

SM520 High Strength Low Alloy Hsla Steel Plate Mechanical Property:

 

 

Symbol	Yield point or proof stressN/mm2 (min)		Tensile strengthN/mm2	Elongation
	Thickness of steel mm		Thickness of steel mm	thinckness	Test piece	% min
	16 or under	Over 16-40	100 or under
SM520B SM520C	365	355	520-640	<5	NO.5	19
				≥5 <16	NO.1A	15
				≥16 <50	NO.1A	19

 

Grade	Test temperature °C	Charp Absorption Energy J (min)	Test piece
SM520B	0	27	No.4 in rolling direction
SM520C	0	47