St52-3 - Q/BQB 303-2018

Grade	St52-3
Corresponding Standard	Q/BQB 303-2018 Conti nuousl y hot-rol l ed steel sheet and stri p for general structure
Classification	Carbon Steel

St52-3 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	N	More
Minimum Value	-	-	-	-	-	-	Ceq≤0.45
Maximum Value	0.2	0.55	1.6	0.025	0.02	0.012	Ceq≤0.45

St52-3 Mechanical Properties

thickness t mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
1.5<t≤2	510~680	≥355	≥14
2<t≤2.5	510~680	≥355	≥15
2.5<t<3	510~680	≥355	≥16
3≤t≤16	510~680	≥355	≥20
t>16	470~630	≥345	≥20

St52-3 Corresponding Standards(Same grade name, different standards)

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