Kobelco - TGX - 347 x 2.2

Kobelco TG-X347 is a premium flux-cored TIG welding rod tailored specifically for non-purging root pass welding.
It conforms to the international industry classification AWS A5.22 R347T1-5.

Like the other rods in Kobelco's specialized TG-X series, its internal flux core melts down during welding to create an instant slag shield over the back of the root bead. This completely eliminates the need for expensive back shielding gas (Argon purging) and cuts out extensive downtime spent on purging jigs.

Key Specifications & Applications
Target Materials: Engineered specifically for joining stabilized 18%Cr–8%Ni stainless steels. It is the ideal choice for welding AISI 347 (Niobium-stabilized) and AISI 321 (Titanium-stabilized) base metals.
Metallurgical Advantage: Formulated with Niobium (Nb) stabilization. Niobium selectively binds with carbon to heavily resist Chromium carbide precipitation at grain boundaries, ensuring maximum resistance to intergranular corrosion under high thermal loads.
Welding Parameters: Deployed via Gas Tungsten Arc Welding (GTAW / TIG) on Direct Current Electrode Negative (DCEN) polarity using standard 100% Argon torch shielding gas.
Common Use Cases: Widely specified for high-temperature root runs in oil refinery piping, aircraft exhaust systems, chemical processing vessels, and high-pressure steam boiler tubes.

Critical Operating Procedures
Root Pass Limitation: Due to its active slag-generating system, this filler rod is strictly restricted to the initial root pass. It cannot be utilized for multi-pass filling or capping layers.
High-Speed Travel Technique: Welders must not use traditional slow, sluggish solid TIG wire techniques. The TG-X rod must be advanced rapidly with a short-pitch travel technique to ensure the molten slag flows smoothly to the back of the joint rather than getting trapped inside the weld pool.

Grade: TGX347
Spec: AWS A5.22 R347T1 5
Size: 2.2
Pack: 4Kg per pack