Q420D - GB /T 34199-2017

Grade	Q420D
Corresponding Standard	GB /T 34199-2017 Hot-Rolled H Section Steel for Electrified Railway Pillars
Classification	Alloy Steel

Q420D Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Ni	N	Ti	V	Nb	More
Minimum Value	-	-	-	-	-	-	-	-	-	-	CEV≤0.44
Maximum Value	0.15	0.5	1.7	0.03	0.025	0.8	0.012	0.2	0.2	0.07	CEV≤0.44

Q420D 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	520~680	t≤16: ReH≥420 16＜t≤40: ReH≥410	A: ≥19	-20°C: ≥34

Approximate Comparison Table Structural, Pressure Vessel and Engineering Steels

China	Japan	United States	International Organization for Standardization	Germany	France	European Standard		Russia
GB	JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST
Q420D	SM490A SM490C	A255Gr.D A633E	E420	StE420	E420R	S420N FeE420KGN	1.8902	16G2AF

Q420D 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"!