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JIS G3106 Structrual Steel Plate

JIS G3106 specification is for hot rolled carbon steel plate for welded structrual purposes, steel grades include: SM400A/B/C, SM490A/B/C, SM490YA/YB, SM520B/C,SM570.

Appication:

SM400A/B/C: Carbon steel shapes, plates, and bars of structural quality for use in riveted, bolted, or welded construction of bridges and buildings, and for general structural purposes.
SM490A/B/C: Hot rolled steel plate used for outside engineering, ships, military (armored) construction.
SM490YA/YB: Super heavy steel plate for welded structure of bridges, highway construction.
SM520B/C: Super heavy steel plate for welded structure, it is also low carbon high strength structural steel with good cold forming property.
SM570: Low alloy and high strength steel plate, heavy and wide plate for machinery parts, boom, crane, chassis, buildings bridges and mobile equipment.

JIS G3106 Chemical Composition:

Symbol	Chemical composition
Symbol	C max	Simax	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

JIS G3106 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	thinckness	Test piece	% min
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

JIS G3106 Charp Absorption Energy:

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

JIS G3106 Equivalent Steel Standard:

ASTM	DIN	BS EN	AFNOR	UNI	JIS	GOST
A 570 Gr.40	S275JRSt44-2	Fe 430 B FN 1449 43/25 HR	E 28-2	AE 275 B Fe 430 B FN	SM 400 A;B;C	St4ps; sp
A 572 Gr.65	E335 (Fe 590-2) St 60-2	Fe 60-2 4360-55 E; 55 C	A 60-2	Fe 60-2 Fe 590	SM 570	St6ps; sp

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JIS G3106 Structrual Steel Plate

JIS G3106 Chemical Composition:

JIS G3106 Mechanical Property:

JIS G3106 Charp Absorption Energy:

JIS G3106 Equivalent Steel Standard: