Hobart SDX S4-EH14 description: SDX S4-EH14 is a copper-coated, carbon-steel solid wire for submerged arc welding. SDX S4-EH14 has a high manganese content, and is suitable for welding carbon/non-alloyed steels with moderate tensile strength. In an effort to best serve the packaging needs and requirements of our customers globally, this product has part numbers exclusive to customers in North America, and others exclusive to customers outside of North America.