S355K2WH 1.8646 - EN 10219-3-2020

Grade	S355K2WH
European Standard Steel Grade	1.8646
Corresponding Standard	EN 10219-3-2020 Cold Formed Welded Steel Structural Hollow Sections - Part 3: Technical Delivery Conditions for High Strength and Weather Resistant Steels
Classification	Alloy Steel

S355K2WH Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	More
Minimum Value	-	-	0.5	-	-	0.4	-	0.25	-	Al total: ≥0.02% ^②③
Maximum Value	0.16	0.5	1.5	0.03	0.03	0.8	0.65	0.55	0.3	Al total: ≥0.02% ^②③

① The deoxidation method is designated as follows: FF= fully killed steel containing nitrogen binding elements in amounts sufficient to bind the available nitrogen and having a fine grain structure.
② If sufficient N-binding elements are present, the minimum total Al content does not apply. The nitrogen binding elements shall be reported in the inspection document.
③ The steels shall contain at least one of the following elements: Al total ≥ 0,020 %, Nb: 0,015 - 0,060 %, V: 0,02 - 0,12 %, Ti: 0,02 - 0,10 %. If these elements are used in combination, at least one of them shall be present with the minimum content indicated.

S355K2WH 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＜3	510~680	ReH: ≥355	按协议
3＜t≤16	470~630	ReH: ≥355	≥20
16＜t≤40	470~630	ReH: ≥345	≥20
/				③ ≥40

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