Corodur Corocarb NISE description: COROCARB–NISE is a tubular electrode filled with fused tungsten carbide and a special nickel alloy for manual welding. This alloy is specially designed for application where extreme abrasion in combination with corrosion is encountered. COROCARB–NISE can be overlayed on steel castings, nickel based and stainless steel alloys. The alloy combination of COROCARB–NISE is specially designed for items that are exposed to corrosive media and excessive wear conditions. The matrix is highly resistant to acids, lye’s and other corrosive media.