ER4043 is a 5% Silicon aluminum filler metal that is one of the most widely used aluminum welding alloys for fabrication and general repair in the aluminum welding industry. The smooth running ER4043 is often preferred because of its reduced crack sensitivity over other aluminum welding wires. This aluminum alloy contains silicon additives, which result in improved fluidity (wetting action) of the weld pool.

APPLICATIONS

XTR 4043 is recommended for base metals 3003, 3004,5052, 6061, 6063 and casting alloys 43, 355, 356 and 214. 4043 is a great choice for the welding of heat-treatable base alloys and more specifically the 6XXX series alloys. It has a lower melting point and more fluidity than the 5XXX series filler alloys.