Q345A L03451 - GB /T 1591-2008

Grade	Q345A
China ISC	L03451
Corresponding Standard	GB /T 1591-2008 High Strength Low Alloy Structural Steels
Brand/Supplier	-> BENSTEEL
Classification	Alloy Steel
Properties	Corrosion Resistance Weldability

Q345A Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N	Ti	V	Nb
Minimum Value	-	-	-	-	-	-	-	-	-	-	-	-	-
Maximum Value	0.2	0.5	1.7	0.035	0.035	0.3	0.5	0.3	0.1	0.012	0.2	0.15	0.07

Q345A 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	≥20
16 < t ≤ 40	470~630	≥335	≥20
40＜t≤63	470~630	≥325	≥19
63＜t≤80	470~630	≥315	≥19
80＜t≤100	470~630	≥305	≥19
100＜t≤150	450~600	≥285	≥18
150＜t≤200	450~600	≥275	≥17
200＜t≤250	450~600	≥265	≥17

Q345A Corresponding Standards(Same grade name, different standards)

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!