Japanese standard low-alloy high-strength SM520B steel plate

1. SM520B steel plate executive technical standard: JISG 3106.

2. Delivery status of SM520B steel plate: hot rolled, normalized, quenched + tempered or tempered.

3. Chemical composition of SM520B steel plate:

Grade	Thickness	C	Si	Mn	P	S
SM520B	Thickness≤100mm	≤0.20	≤0.55	≤1.65	≤0.035	≤0.035

4. Mechanical properties of SM520B 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
SM520B	≥365	≥355	≥335	≥325	520-640	≤5	≥19
						5<t≤16	≥15
						5<t≤50	≥19
						>40	≥21

5. Brief introduction of SM520B Japanese standard low-alloy high-strength plate:

SM520B steel plate is a low-alloy high-strength steel plate produced in accordance with the Japanese standard JIS G3106. It is a grade of the Japanese Industrial Standard. S stands for Steel (Steel), 520 is the lower limit tensile strength of 520MPa, and B is the steel plate grade, and impacts at 20℃.