4000 series aluminum alloy is an aluminum alloy with silicon as the main alloying element. Most of its alloys are heat-treated non-strengthened aluminum alloys. Only alloys containing Cu, Mg and Ni, and welding heat-treated strengthened alloys can absorb certain elements.
This series of alloys are mainly used to manufacture aluminum alloy welding additives, such as brazing plates, welding rods and Welding wire, etc.
