DUCOL STEEL FOR BRIDE-BUILDING MATERIAL

Abstract

The Ducol steel was used as the material in cases of the construction of the Eitai bashi and the Kiyosu bashi. The anther is not aware if the material has been previously used for a bridge.
The material investigated by the author has the C content of 0.24-0.30% and Mn of 1.4-1.6% giving. The tensile strength 63-71kg/mm², elongation 20-23% in 200mm gauge and elastic limit 42kg/mm².
The Ducol steel seems to be preferable as the bridge building material both in quality and in the cost compared with others such as Ni steel, Si steel and C steel.