SM400B - JIS G 3106-2008

Grade	SM400B
Corresponding Standard	JIS G 3106-2008 Rolled steels for welded structure
Classification	Carbon Steel

SM400B Chemical Element Composition Content (%)

	Component	C	Si	Mn	P	S
厚度≤50	Minimum Value	-	-	0.6	-	-
厚度≤50	Maximum Value	0.2	0.35	1.5	0.035	0.035

	Component	C	Si	Mn	P	S
<50厚度≤200	Minimum Value	-	-	0.6	-	-
<50厚度≤200	Maximum Value	0.22	0.35	1.5	0.035	0.035

SM400B Mechanical Properties

thickness t mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
t≤16	400~510	≥245
16<t≤40	400~510	≥235
40<t≤100	400~510	≥215
100<t≤160	400~510	-
160<t≤200	400~510	-
t≤5			No.5 ≥23
5<t≤16			No.1A ≥18
16<t≤50			≥22
t>40			No.4 ≥24

1 Approximate Comparison Table Carbon Structural Steel and Engineering Steel

2 Approximate Comparison Table Carbon Structural Steel and Engineering Steel

China	Japan	United States	International Organization for Standardization	Germany	France	European Standard		Russia	Sweden	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	SS	BS EN/BS
Q235C	SM400B	A284C A284D	E235C	St37-3U	E24-3	S235J0 Fe360C	1.0114	St3ps St3sp	1312	40C

3 Approximate Comparison Table High-Quality Carbon Structural Steel

4 Approximate Comparison Table Carbon Structural Steel and Engineering Steel

China		Japan	United States	International Organization for Standardization	European Standard
GB	ISC	JIS	ASTM/AISI	ISO	EN	Numerical Grade
Q235D (GB/T 700-2006)	U12359	SM400B (JIS G3106:2004)	Gr.65[240] (ASTM A283/A283M:2003)	E235D (ISO 630:1995)	S235J2 (EN 10025-2:2004)	1.0117

SM400B Corresponding Standards(Same grade name, different standards)

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