Nihonweld N-6020 description: NIHONWELD N-6020 has a heavy mineral type of coating and is outstanding for high speed and quality downhand welds. The heavy coating permits the use of high welding currents without undue spatter and provides very rapid deposition and burn off rates. Arc action is forceful and provudes deep penetration especially at high currents. bead contour in deep grooves is concave, and flat in horizontal fillets; the thick slah covering is porous, brittle and very easy to remove. The deposited metal has outstanding mechanical properties including good tensile strength and impact qualities, high ductility and no porosity.