Answer
Oct 01, 2025 - 12:55 PM
Flux wire, used in flux-cored arc welding (FCAW), has a hollow core filled with flux that creates a shielding gas when heated, allowing it to be used without an external gas supply. MIG wire, used in metal inert gas (MIG) welding, is a solid metal wire that requires an external shielding gas to protect the weld from contamination. The main difference is that flux wire can be used outdoors and in windy conditions, while MIG wire generally needs a controlled environment.
