S355J2G3

S355J2G3 is a European standard designation for a specific grade of structural steel. This designation follows the EN 10025-2 standard, which specifies the technical delivery conditions for hot-rolled products of structural steels. The "S" indicates structural steel, "355" denotes the minimum yield strength in megapascals (MPa) at room temperature, "J2" signifies a minimum impact energy of 27 Joules at -20 degrees Celsius, and "G3" indicates a specific process of controlled cooling after rolling.

This grade of steel is characterized by its good weldability and its suitability for a wide range of construction applications where moderate strength and toughness are required. The controlled cooling process (G3) ensures a finer grain structure, which contributes to improved mechanical properties, particularly at lower temperatures. S355J2G3 is commonly used in building structures, bridges, and general fabrication projects. It offers a balance of strength, toughness, and workability, making it a versatile material for engineers and fabricators. The material is typically supplied in various forms, including plates, sections, and bars, to meet diverse project needs.