ED035239 - Lincoln ER347 Stainless TIG Rods 1/8" (3.2mm) - Stabilized

Industrial Grade ER347 Stainless Steel TIG Rods

The Lincoln Electric ER347 TIG Rods (1/8" / 3.2mm) are a premium filler metal solution designed for the rigorous demands of industrial stainless steel fabrication. This consumable is specifically engineered for welding niobium or titanium stabilized stainless steels, such as AISI types 347 and 321. The inclusion of niobium (also known as columbium) in the alloy composition is a critical feature; it acts as a strong carbide former, preventing the precipitation of chromium carbides at the grain boundaries during the welding process and subsequent service. This stabilization ensures that the weldment retains exceptional resistance to intergranular corrosion, a common failure mode in unstabilized stainless steels subjected to heat.

High-Temperature Performance and Reliability

For industries operating in high-temperature environments, such as chemical processing and power generation, material integrity is non-negotiable. Lincoln ER347 rods provide high creep strength and structural stability at elevated temperatures. This makes them the preferred choice for welding components that will be exposed to temperatures where carbide precipitation would otherwise occur (typically between 800°F and 1500°F). By matching the base metal's chemistry with a stabilized filler, fabricators ensure the longevity and safety of pressure vessels, piping systems, and heat exchangers.

Precision and Quality Control

Lincoln Electric is synonymous with consistency. These TIG rods are manufactured to tight tolerances, ensuring a consistent diameter of 3.2mm (1/8 inch) and uniform chemical composition throughout the batch. This consistency translates to predictable arc behavior, smooth feeding, and a stable weld pool, allowing operators to maintain precise control over heat input and bead profile. The rods are cleaned and packaged to prevent contamination, ensuring that every weld meets the stringent requirements of codes such as AWS A5.9.

Applications in Critical Infrastructure

The specific metallurgy of ER347 makes it indispensable in sectors requiring high purity and durability. It is extensively used in the fabrication of pharmaceutical equipment, food processing machinery, and oil refineries. Whether repairing existing stabilized stainless structures or fabricating new process piping, these rods deliver the mechanical properties and corrosion resistance necessary for critical infrastructure projects.