Ni-electrode for repair welding of lamellar cast iron, malleable cast iron and cast iron to steel. Produces a soft malleable weld deposit. Hardness weld deposit ~ 175 HB. Preferable welding on DC-, gives pulsed arc welding, deep penetration, smooth surface, no lack of fusion. Welding on AC, the lowest heat input, important at filling. Best choice for multilayer welding.