It was the predominant form of fusion welding until the beg0inning of the 1980s. Electrode rods consist of a wire core with an external coating. They are made in a range of core diameters, with each ...

MATERIALS - PART C - SPECIFICATION FOR WELDING RODS, ELECTRODES, AND FILLER METALS. Base Metal and Welding Alloy Selection Factors The base metal refers to the composition of the workpiece being ...