Flux cored welding wire (FCAW) is an essential tool for welding professionals. It is important to select the right alloy family for the job in order to ensure a successful outcome. There are several criteria that need to be taken into consideration when selecting FCAW wires, such as the type of base metal being welded, the desired weld strength and corrosion resistance, and the environment in which the weld will take place. This article will discuss these criteria in detail so that you can make an informed decision when selecting a flux cored welding wire.