Understanding the The AWS A5.21 ERCOCr-A electrode When welders make decisions on welding, the most predictable first step is to understand the metal materials that they are about to weld together and that decision is so essential that if not properly researched, it might lead to welding crack in the near future. in this article we are going to describe Welding electrode AWS A5.21 ERCOCr-A and its benefits in welding. We believe that as Hellog Energy is one of the foremost dealer of welding electrodes in Nigeria we should recommend the best use of welding electrode and continue to produce…