R4043 - WIRE - MIG (GMAW) – ALUMINUM
ER4043, commonly referred to as “AlSi5", has a 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.
Melting range is 1065 °F– 1170 °F, density is 0.097 lbs/in3 and post
anodizing color is gray.
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