S235JR – Reliable Structural Steel for General Engineering Applications S235JR is a non-alloy structural steel grade that falls under the EN 10025-2 European standard. Widely used in construction and fabrication, it offers a combination of good mechanical strength, excellent weldability, and ease of processing. The 'JR' in the designation indicates that the material has undergone a Charpy impact test at 20°C (room temperature) to ensure toughness. With its low carbon content and consistent quality, S235JR is a go-to material for mild structural elements such as beams, columns, angles, plates, and sections. It’s suitable for applications that demand reliable performance under static loads and standard atmospheric conditions. Key Characteristics: Complies with EN 10025-2 standards Excellent weldability with all conventional welding methods Good machinability and cold-forming properties Suitable for painting, galvanizing, and surface treatments Ideal for non-critical load-bearing applications Chemical Composition (% Approx.): Element Content (%) Carbon (C) ≤ 0.17 Manganese (Mn) ≤ 1.40 Phosphorus (P) ≤ 0.035 Sulfur (S) ≤ 0.035 Nitrogen (N) ≤ 0.012 Mechanical Properties: Property Value Yield Strength ≥ 235 MPa Tensile Strength 360 – 510 MPa Elongation (Long) ≥ 25% Impact Energy (Charpy @ 20°C) ≥ 27 J Typical Applications: Structural frames and steel profiles General construction (e.g., bridges, buildings, scaffolding) Fabricated parts like brackets, frames, and plates Machinery frames and base plates Automotive components and light mechanical parts Conclusion: S235JR is an ideal structural-grade steel that balances economy, strength, and weldability. It is well-suited for both indoor and mild outdoor applications and is a preferred choice in civil construction, infrastructure projects, and general metal fabrication.