ER4043 Aluminum / Silicon TIG Welding Rod 1lb. Pack ...
Note: Rods per pack is an approximate and varies on metal type. ER4043 Aluminum / Silicon AWS A 5.10 CLASS ER4043 ER4043 commonly referred to as ALSi5 is a 5 Silicon Aluminum filler metal that is used primarily for welding Aluminum Alloys 3003, 3004, 5052, 6061, 6063 and Casting Alloys 43, 355, 356, and 214.