Steel 1.0577 (S355J2 / St52) is a highly versatile, unalloyed structural steel known for its excellent weldability, good machinability, and high yield strength. It features guaranteed impact resistance at sub-zero temperatures down to -20°C. Because of its reliable mechanical performance and formability, it is widely used in heavy machinery, construction frameworks, automotive engineering, and the manufacturing of load-bearing components like bridges and cranes.