What is the difference between S355J0W and S355J0 corrosion-resistant steel plate

Sep 25, 2025

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Products Description

 

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

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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S355J0W steel is widely used in high-speed rail bogies, welding, bolting and riveting parts. S355J0 steel plate enhances the ability to resist atmospheric corrosion at ambient temperature.

 

In order to achieve corrosion resistance, certain alloy elements are added, such as: P, Cu, Cr, Ni, Mo. Under various climatic conditions A protective oxide layer is formed on the metal surf

 

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