They contain different amounts of silicon;

4043 is mostly used for argon arc welding,4047 is higher;

General 4047 is usually used for flame welding or argon arc welding

Aluminum wire 4043 and 4047 copper belongs to the aluminum silicon wire series.

Weld wire:

Aluminum aluminum welding wire, also known as aluminum flux cored wire, is a kind of welding wire that can be brazed directly by flame or induction. Aluminum aluminum welding wire is also known as aluminum flux cored wire, so the welding wire can weld aluminum and aluminum. It is different from ordinary aluminum wire to use argon arc welding machine welding, also different from aluminum silicon wire 4047 need with brazing agent to weld, and only through flame or induction can be directly brazing welding (because of its own brazing agent, so do not need to add brazing agent). The welding wire welding out of the workpiece tensile shear strength (joint fastness is not lower than the base material), electrical conductivity, corrosion resistance is good, and the quality is stable, the soldering agent composition and performance of the wire see the site. Compared with using argon arc welding machine with aluminum welding wire, aluminum welding wire workers simple operation, simple welding equipment, welding will not change the structure of the base material.