What is the difference between S355J0W and S355J0 steel

S355J0W is a weathering steel plate, S355J0W steel plate is an improved atmospheric corrosion-resistant structural steel plate, and S355J0 is a carbon structural steel, with a European designation, and implements the EN10025-2 standard.

S355J0W steel chemical element, composition melting analysis:

C	Si	Mn	P	S	Ni	Cr	Mo	Cu	N	Zr	Ceq Max
≤0.16	≤0.5	0.5-1.5	≤0.03	≤0.025	≤0.65	0.4-0.8	≤0.3	0.25-0.55	≤0.010	≤0.15	≤0.52

Ingredient Note: For every 0.005 decrease in the maximum P, the maximum N is allowed to increase by 0.001, up to a maximum of 0.012.

S355J0 steel chemical elements, composition melting analysis:

C	Si	Mn	P	S	Cu	N
≤0.22	0.2-0.55	≤1.6	≤0.025	≤0.025	≤0.3	≤0.009

Mechanical properties of S355J0W steel:

Thickness	Mechanical properties
>40-63mm	ReH(MPa)	≥335	When the yield is not obvious, use Rp0.2
	Rm(MPa)	470-630
	A(%)	≥19
	Impact temperature	0
	Akv(J)	≥27	Longitudinal
	Remark	Transverse sampling for tensile test; delivery condition: hot rolled, normalized, normalized rolled
>63-80mm	ReH(MPa)	≥325	When the yield is not obvious, use Rp0.2
	Rm(MPa)	470-630
	A(%)	≥18
	Impact temperature	0
	Akv(J)	≥27	Longitudinal
	Remark	Transverse sampling for tensile test; delivery condition: hot rolled, normalized, normalized rolled
>80-100mm	ReH(MPa)	≥315	When the yield is not obvious, use Rp0.2
	Rm(MPa)	470-630
	A(%)	≥18
	Impact temperature	0
	Akv(J)	≥27	Longitudinal
	Remark	Transverse sampling for tensile test; delivery condition: hot rolled, normalized, normalized rolled
>100-150mm	ReH(MPa)	≥295	When the yield is not obvious, use Rp0.2
	Rm(MPa)	450-600
	A(%)	≥18
	Impact temperature	0
	Akv(J)	≥27	Longitudinal
	Remark	Transverse sampling for tensile test; delivery condition: hot rolled, normalized, normalized rolled

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