EXCU0000000620T - ERCu Deoxidized Copper TIG Rod - 1/16" (1.6mm) x 36" - 10lb Tube

High-Performance Deoxidized Copper Filler Metal

The Exocor ERCu Deoxidized Copper TIG Rod is a premium quality filler metal designed specifically for the Gas Tungsten Arc Welding (GTAW) of copper base metals. Manufactured to meet strict AWS A5.7 specifications, this rod is composed of 98% or more pure copper, with trace amounts of phosphorus and silicon added as deoxidizers. These alloying elements are critical in preventing porosity, a common issue when welding copper, by reacting with oxygen to form slag rather than trapped gas bubbles. This formulation ensures sound, defect-free welds while maintaining the high electrical and thermal conductivity inherent to copper.

Metallurgical Properties and Applications

ERCu is primarily used to join deoxidized copper and electrolytic tough pitch copper. Its high purity makes it an ideal choice for applications requiring significant electrical conductivity, such as the fabrication of bus bars, electrical connectors, and grounding straps. Additionally, it is widely used in the chemical processing industry due to its excellent corrosion resistance. The rod produces a deposit that closely matches the color of the base metal, making it a preferred choice for architectural and artistic copper work where aesthetics are paramount. It can also be used for overlaying steel surfaces to provide a corrosion-resistant copper cladding.

Welding Procedure Recommendations

Welding copper requires careful attention to heat input due to the material's extreme thermal conductivity. For thicknesses over 1/8 inch, preheating the base metal to approximately 400°F–1000°F is often necessary to ensure proper fusion and bead profile. The Exocor ERCu rod performs best with 100% Argon shielding gas for thin sections, while a mixture of Argon and Helium is recommended for thicker sections to increase heat input and penetration. The welding current should be set to Direct Current Electrode Negative (DCEN). Cleanliness is paramount; base metals must be free of oil, grease, and oxides before welding to ensure the integrity of the joint.

Quality and Compliance

Packaged in a durable 10lb tube, these 36-inch cut lengths are protected from moisture and contamination, ensuring they arrive ready for critical applications. Exocor's commitment to quality ensures consistent diameter control and chemical composition, providing welders with a reliable consumable that produces repeatable, high-quality results in demanding industrial environments.