AWS Class ENi-1 Coated Electrodes are widely used for welding and repairing gray cast iron, malleable cast iron, and ductile cast iron components. Common applications include engine blocks, pump housings, machine frames, valves, and gearbox casings. These electrodes are especially suitable for cold welding techniques where controlled heat input is required. ENi-1 electrodes are also used for joining cast iron to mild steel, offering reliable crack resistance, good fusion, and excellent post-weld machinability in maintenance and industrial repair applications.