SM400 SM490 SM520 SM570 steel plate

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SM400, SM490, SM520 ,SM570 steel
JIS G 3106-1999
Rolled steels for welded structure
SM400/ SM490/ SM520/SM570 Chemical composition unit%

Symbol	Chemical composition
Symbol	C max	Si max	Mn	P max	S max
SM400A	0.23	-	2.5xc min	0.035	0.035
SM400B	0.20	0.35	0.6-1.40	0.035	0.035
SM400C	0.19	0.35	1.4 max	0.035	0.035
SM490A	0.20	0.55	1.6 max	0.035	0.035
SM490B	0.19	0.55	1.6 max	0.035	0.035
SM490C	0.19	0.55	1.6 max	0.035	0.035
SM490YA	0.20	0.55	1.6 max	0.035	0.035
SM490YB	0.20	0.55	1.6 max	0.035	0.035
SM520B	0.20	0.55	1.6 max	0.035	0.035
SM520C	0.20	0.55	1.6 max	0.035	0.035
SM570	0.19	0.55	1.6 max	0.035	0.035

SM400/ SM490/ SM520/SM570 Mechanical properties

Symbol	Yield point or proof stress N/mm2 (min)		Tensile strength N/mm2	Elongation
	Thickness of steel mm		Thickness of steel mm	thinckness	Test piece	% min
	16 or under	Over 16-40	100 or under
SM400A SM400B SM400C	245	235	400-510	<5	NO.5	23
				≥5 <16	NO.1A	19
				≥16 <50	NO.1A	22
SM490A SM490B SM490C	325	315	490-610	<5	NO.5	22
				≥5 <16	NO.1A	17
				≥16 <50	NO.1A	21
SM490YA SM490YB	365	355	490-610	<5	NO.5	19
				≥5 <16	NO.1A	15
				≥16 <50	NO.1A	19
SM520B SM520C	365	355	520-640	<5	NO.5	19
				≥5 <16	NO.1A	15
				≥16 <50	NO.1A	19
SM570	460	450	570-720	<5	NO.5	19
				≥5 <16	NO.5	26
				≥16 <50	NO.5	20

Symbol of grade	Test temperature °C	Charp Absorption Energy J (min)	Test piece
SM400B	0	27	No.4 in rolling direction
SM400C	0	47
SM490B	0	27
SM490C	0	47
SM490YB	0	27
SM520B	0	27
SM520C	0	47
SM570	-5	47

Bebon International is a professional SM400 SM490 SM520 SM570 steel exporter and a steel Stockist in china. We keep more than 1000 tons SM400 SM490 SM520 SM570 steel in stock every month. If you want to get the SM400 SM490 SM520 SM570 steel price, please do not hesitate to contact us. Any need in SM400 SM490 SM520 SM570 Chemical Composition and Mechanical Properties, please feel free to contact us by email or calling to us.

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