Small packs, pure nickel electrodes for cast iron cold welding, for gray cast iron, malleable cast iron, as well as connections between gray cast iron and steel, very crack-proof Tensile strength: approx. 300 Nmm2 Hardness: approx. 150 HB Welding positions: w, h (s) (q) (ü) Type of current: = (+) -DIN 1913: E-Ni G3