Q390B - GB /T 34199-2017

Grade	Q390B
Corresponding Standard	GB /T 34199-2017 Hot-rolled H section steel for electrified railway pillars
Classification	Alloy Steel

Q390B Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Ni	N	Ti	V	Nb	More
Minimum Value	-	-	-	-	-	-	-	-	-	-	CEV≤0.43
Maximum Value	0.2	0.5	1.6	0.035	0.035	0.5	0.01	0.2	0.15	0.07	CEV≤0.43

Q390B Mechanical Properties

thickness t mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
t≤40	490~650	t≤16: ReH≥390 16＜t≤40: ReH≥370	A: ≥20	20°C: ≥34

Q390B Corresponding Standards(Same grade name, different standards)

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