Q275B U12755 C5 Q275BZ - GB /T 700-2006

Grade	Q275B
China ISC	U12755
Other Names
Old Grade
Corresponding Standard	GB /T 700-2006 Carbon Structural Steels
Brand/Supplier	-> BENSTEEL
Classification	Carbon Steel

Q275B Chemical Element Composition Content (%)

	Component	C	Si	Mn	P	S	Cr	Ni	Cu	As	N
厚度或直径 ≤40mm	Minimum Value	-	-	-	-	-	-	-	-	-	-
厚度或直径 ≤40mm	Maximum Value	0.21	0.35	1.5	0.045	0.045	0.3	0.3	0.3	0.08	0.008

	Component	C	Si	Mn	P	S	Cr	Ni	Cu	As	N
厚度或直径 >40mm	Minimum Value	-	-	-	-	-	-	-	-	-	-
厚度或直径 >40mm	Maximum Value	0.22	0.35	1.5	0.045	0.045	0.3	0.3	0.3	0.08	0.008

Q275B Mechanical Properties

thickness(diameter) t(d) mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
≤16	410~540	≥275	≥22	≥27
＞16～40	410~540	≥265	≥22	≥27
＞40～60	410~540	≥255	≥21	≥27
＞60～100	410~540	≥245	≥20	≥27
＞100～150	410~540	≥225	≥18	≥27
＞150～200	410~540	≥215	≥17	≥27

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
Q275B (GB/T 700-2006)	U12753	SM490A (JIS G3106:2004)	Gr.70[290] (ASTM A573/A573M:2000)	E275B (ISO 630:1995)	S275JR (EN 10025-2:2004)	1.0044

Q275B Corresponding Standards(Same grade name, different standards)

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