UNIMIG 5356 Aluminium MIG Wire is one of the highest quality aluminium welding wires available due to its consistent feed ability which is accomplished through the use of advanced wire drawing technology and a proprietary triple shaving process. 5356 is sometimes referred to as “marine grade” because it is widely used in the marine industry and it’s very commonly found in general fabrication applications as well. The major element in 5356 wire is 5% magnesium. The wire has excellent weldability and corrosion resistance.