S355J2+N is a non-alloy structural steel grade specified under EN 10025-2, offering an excellent balance of strength, toughness, and weldability. With a minimum yield strength of 355 MPa, this grade is suitable for use in load-bearing structures across demanding sectors such as civil engineering, heavy machinery, bridges, and energy infrastructure. The “J2” designation indicates that the material is impact tested at -20°C, ensuring improved toughness in low-temperature environments, while the “+N” stands for normalized rolling, enhancing the steel’s strength and structural integrity through controlled processing. Key Features: 355 MPa minimum yield strength for enhanced load-bearing performance Impact tested at -20°C (J2) for reliable use in cold and sub-zero conditions Normalized condition (+N) ensures uniform mechanical properties and better structural behavior Excellent weldability, machinability, and formability, even in complex fabrications Typical Mechanical Properties: Property S355J2+N Yield Strength ≥ 355 MPa Tensile Strength 470–630 MPa Elongation ≥ 19–22% Impact Resistance ≥ 27 J at -20°C (Charpy test) Weldability Excellent Common Applications: Heavy-duty structural frameworks and civil construction Bridges, offshore structures, and energy platforms Pressure vessels and mechanical components Cranes, earthmoving machinery, and lifting systems Structural supports, base plates, and fabrication assemblies Summary: S355J2+N delivers a strong combination of mechanical strength, low-temperature toughness, and processability, making it a reliable choice for robust engineering and construction projects. Its consistent performance and structural integrity under dynamic and low-temperature conditions make it a go-to steel grade for modern infrastructure.