S355N steel is a European standard hot-rolled structural steel product, and other materials of the same series such as S355JO steel, S355K2 steel, S355J2 steel, etc.
The implementation standard of S355N steel is EN10025.
Composition and properties of S355N steel
chemical composition
C:≤0.20;
Si:≤0.50;
Mn:≤1.65;
P:≤0.030;
S:≤0.025;
Yield strength (Mpa)
≤16:≥355;
16-40:≥345;
40-63:≥335;
63-80:≥325;
80-100:≥315;
100-150:295;
150-200:≥285;
200-250:≥275;
Tensile strength (Mpa): 470-630.
S355N steel use
S355N steel is mainly used for large ships, bridges, power station equipment, medium and high pressure boilers, high pressure vessels, rolling stock, lifting machinery, mining machinery and other large welded structural parts.