E7018 mild steel welding rod easily produce quality results on smaller amperage AC/DC welders; suitable for all positions on harden steels where no preheat is used and on cold rolled steels normally exhibiting excessive porosity when welded with conventional rod; the low hydrogen content reduces cracking and peeling of the weld material; features excellent restart capability; designed for welding low, medium and high carbon steels as well as some higher strength low alloy steel; for frames, trailer hitches and chassis. Recommended Polarity: AC, DCEN, DCEP (Reverse). Tensile Strength (PSI): 84,000. Amperage: 100-140 on sku #s (890.9624, 890.9632) Amperage: 140-190.