QStE650TM - Q/BQB 310-2023

Grade	QStE650TM
Corresponding Standard	Q/BQB 310-2023 Continuously hot-rolled steel sheet and strip for automobile structural use
Classification	Alloy Steel

QStE650TM Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr ^*	Ni ^*	Cu ^*	Mo	Ti ^ⓐ	V ^ⓐ	Nb ^ⓐ	B	Al ^ⓐ	More
Minimum Value	-	-	-	-	-	-	-	-	-	-	-	-	-	0.015	Nb+V+Ti≤0.22ⓐ
Maximum Value	0.12	0.6	2	0.025	0.015	0.15	0.15	0.2	0.5	0.22	0.2	0.09	0.005	-	Nb+V+Ti≤0.22ⓐ

QStE650TM Mechanical Properties

thickness t mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
t＜3	700~880	ReH: ≥650	L0=80mm,b=20mm ≥10
t≥3	700~880	ReH: ≥650	L0=5.65√S0 ≥14

QStE650TM 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"!