GB11263-89 Q345E H Beam with Large Stock

Q345E H Beam is mainly used for Engineering machinery, mining machinery, metallurgical environmental protection, water conservancy and hydropower, rail equipment and other structural parts.

Chemical Composition of Q345E H Beam

C≤	Si≤	Mn≤	P≤	S≤
0.18	0.50	1.70	0.025	0.020
Nb≤	V≤	Ti≤	Cr≤	N≤
0.07	0.15	0.20	0.30	0.50
Mo≤	B≤	Al≥
0.30	0.012	0.10

Carbon equivalent should be ≤ 0.44

Q345E H Beam Mechanical Property

Grade	Thickness	Tensile Strength Rm/Mpa	Yield Strength ReL/Mpa	Elongation A/%	Impact test temperature
	mm	Min	Min	Min	℃
Q345E	6~40	470-630	335	21	-40
	>40~63	470-630	325	20	-40
	>63~80	470-630	315	20	-40
	>80~100	470-630	305	20	-40
	>100~150	450-600	285	19
	>150~200	450-600	275	18
	>200~250	450-600	265	18
	>250~400	450-600	265	17

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