Welding Electrodes Low Hydrogen Rod Premium AWS CLASS E-7018. General purpose contact type electrode with powdered iron coating. Designed for high sulphur steels, hardenable low alloy steels, high tensile steels, medium and high carbon steels, cold rolled steels and free machining steels. Ideal for joining hard to weld steels. Flat, vertical and fillet positions only. 1/8” 1 lb. 70,000 PSI 1440-0185 Yes - CARBON MONOXIDE