4043 Aluminium MIG Wire 0.5kgALUWELD 4043 Aluminium MIG Wire 0. 9mm x 0. 5kg Spool (For Spool Gun Use) The ALUWELD 4043 Aluminium MIG Welding Wire is a high quality aluminium silicon alloy wire (AlSi5) designed for smooth feeding and clean, consistent welds when used with a spool gun. Its 5% silicon content improves fluidity and reduces hot cracking, making it ideal for general aluminium fabrication and repair work. Perfect for welding Aluminium 6xxx series alloys (e. g. 6061,