ER4043, commonly referred to as "AlSi5", has 5% silicon and is the oldest and one of the most widely used aluminum welding wires for general-purpose applications.
Less sensitive to weld cracking than other aluminum alloys and the 5% silicon content lowers the melting point, increases the fluidity of the weld puddle, and leaves a bright, shiny weld deposit.
ER4043 is commonly used for welding grades 6061, 6063, 5052, 3004, 3003 and cast alloys 356.0, 357.0, 413.0, and 443.0, to name just a few.
The melting range is 1065 F - 1170 F, the density is 0.097 lbs/in3 and the post anodizing color is gray.
16 Lb of wire per Spool - Available diameters: 0.030", 0.035", and 0.045" - Available in 1 or 2 Spool packs - Select your choice from the menu.
