CHARACTERIZATION OF MECHANICAL PROPERTIES OF WELDING MATERIALS USING FABRICATION OF STEEL BRIDGES

Abstract

 Recently, many kinds of welding materials were widely used in fabrication of steel bridges. It was considered that the quality of these welding materials has been remarkably improved. However, the statistical characteristics of the material is not clarified. In this paper, we have investigated the 638 of welding materials on the basis of the mill sheet in order to clarify their quality. Investigated items were tensile strength, yield strength, Charpy-absorbed-energy, elongation and yield ratio, and these mechanical properties were shown. We also showed improvement in the quality, comparing with the conventional steel data and welding procedure tests date, which were SM490Y, SMA490W, SM570Q and SMA570W.