SAPH440 - Q/BQB 310-2023

Grade	SAPH440
Corresponding Standard	Q/BQB 310-2023 Continuously hot-rolled steel sheet and strip for automobile structural use
Classification	Carbon Steel

SAPH440 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr ^*	Ni ^*	Cu ^*	Al
Minimum Value	-	-	-	-	-	-	-	-	0.01
Maximum Value	0.21	0.3	1.6	0.025	0.02	0.15	0.15	0.2	-

SAPH440 Mechanical Properties

thickness t mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
1.5≤t＜2	≥440	ReH: ≥305 ≥255	≥29
2≤t＜2.5	≥440	ReH: ≥305	≥30
2.5≤t＜3.15	≥440	ReH: ≥305	≥32
3.15≤t＜4	≥440	ReH: ≥305	≥33
4≤t＜6.3	≥440	ReH: ≥305	≥34
6.3≤t＜8	≥440	ReH: ≥295	≥35
t≥8	≥440	ReH: ≥275	≥35

SAPH440 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"!