CHARACTERIZATION OF CHEMICAL COMPOSITIONS 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, chemical compositions 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 component were Carbon, Silicon, Manganese, Phosphorus, Sulfur, Copper, Chrome and Nickel, and these results were shown. We also showed difference in the quality, comparing with the conventional steel data, which were SM490Y, SMA490W, SM570Q and SMA570W.