Q345C L03453 - GB /T 1591-2008

Grade	Q345C
China ISC	L03453
Corresponding Standard	GB /T 1591-2008 High Strength Low Alloy Structural Steels
Brand/Supplier	-> BENSTEEL
Classification	Alloy Steel
Properties	Forgability Machinability Weldability

Q345C Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N	Ti	V	Nb	Al ^b
Minimum Value	-	-	-	-	-	-	-	-	-	-	-	-	-	0.015
Maximum Value	0.2	0.5	1.7	0.03	0.03	0.3	0.5	0.3	0.1	0.012	0.2	0.15	0.07	-

Q345C Mechanical Properties

thickness（diameter，length of side） t mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
t≤16	470~630	≥345	≥21
16< t≤ 40	470~630	≥335	≥21
40＜t≤63	470~630	≥325	≥20
63＜t≤80	470~630	≥315	≥20
80＜t≤100	470~630	≥305	≥20
100＜t≤150	450~600	≥285	≥19
150＜t≤200	450~600	≥275	≥18
200＜t≤250	450~600	≥265	≥18

1 Approximate Comparison Table Carbon Structural Steel and Engineering Steel

China	Japan	United States	International Organization for Standardization	Germany	France	European Standard		Sweden	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	SS	BS EN/BS
Q345B Q345C	SM490A SS490	A572 A678Gr.A SSGrade50	E355C Fe510B	St52-3	E36-2	S355JR Fe510B	1.0045	2132-01	50B

2 Approximate Comparison Table Carbon Structural Steel and Engineering Steel

China	International Organization for Standardization	Germany	France	European Standard		Russia	Sweden
GB	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	SS
Q345C	FeE690	St60-2	A60-2	E335 Fe590-2①	1.0060	St5ps St5sp St6ps St6sp	1650-00 1650-01

Q345C Corresponding Standards(Same grade name, different standards)

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