Q620qD - GB /T 714-2015

Grade	Q620qD
Corresponding Standard	GB /T 714-2015 Structural Steel for Bridge
Classification	Alloy Steel

Q620qD Chemical Element Composition Content (%)

	Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N	Ti ^①	V ^①	Nb ^①	B ^③④	Al ^①②	H ^③
调质钢	Minimum Value	-	-	0.8	-	-	0.4	0.25	-	0.2	-	0.006	0.01	0.005	0.0005	0.01	-
调质钢	Maximum Value	0.14	0.55	1.7	0.025	0.015	0.8	1	0.3	0.5	0.008	0.03	0.08	0.09	0.003	0.045	0.0002

Q620qD Corresponding Standards(Same grade name, different standards)

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