Oerlikon Carbofil NiCu description: CARBOFIL NiCu is suitable for welding a range of structural weather resistant steels in applications such as bridge fabrication, exposed frame structures, transmission towers, barriers, ducting, chimneys, shields and inner exhaust systems. Due to the alloying elements, CARBOFIL NiCu can also be used for the welding of high yield strength steels. The addition of Ni and Cu to the weld metal provides increased resistance to atmospheric corrosion compared to conventional C-Mn steels. Solid wire for welding type CORTEN carbon steels with gas shielding. Excellent mechanical characteristics and resistance to corrosion.