LONGEVITY E6013 Thunderarc, 3.2mm; 11 LB E6013 1/8"(3.2) 14"(350mm) mild steel. Stick welding is ideal for outdoor conditions such as windy environments and material that you would find on location that are not the cleaned and prepped very much. With the Thunder Arc E6013 electrode you are able to weld in all positions on carbon steel. You can run this electrode on AC or DCEP. It has a Tensile strength of 60,000 PSI which allows for better penetration.