Fine grain structural steel

from Wikipedia, the free encyclopedia

Fine-grain structural steel is a term for structural steels whose properties are particularly suitable for welding . They have a higher yield strength and, thanks to their fine grain, are more ductile than comparable steels . Due to the negative influence of carbon on the weldability of a material, the maximum carbon content in fine-grained structural steels is less than 0.2%. The fine grain in the metallurgical structure is achieved by alloying elements, the nitrides and carbides of which only dissolve at higher temperatures. Fine-grained structural steels are mainly used in reinforced concrete structures that are subject to high tensile loads , in the construction of cranes , hydraulic cylinders or other welded structures due to their special weldability.