Nihonweld N-9018-B3 description: N-9018-B3 is an all position, iron powder-low hydrogen electrode developed for welding 2.25% Cr-1% Mo steel which is subjected to elevated temperatures such as those found in the power piping and boiler industries. This electrode has extremely high deposition efficiency, producing X-ray quality weld deposits with mechanical properties that meet or exceed AWS-ASTM requirements. N-9018-B3 electrodes yield a stable arc with low spatter. AC or DC (reverse polarity) may be used.