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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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