T-PUT Union TG 55 FE description: Union TG55 Fe is a high-efficiency flux cored wire with metal powder filling, for all position welding with mixed gas M21 acc. to EN ISO 14175. It features outstanding mechanical properties in temperature range down to –40 C (–40 F) with very low fume level and oxide build up. The stable arc, the smooth droplet transfer, the secure penetration, its high deposition rate in the spray arc range and the high deposition efficiency of 98 % approx. are only some of the positive properties of this wire.