is a filler metal rod with a hollow core or outer coating containing flux powder, eliminating the need for separate flux application, ensuring uniform flux distribution, and creating strong, clean, corrosion-resistant joints by cleaning oxides and improving wetting for dissimilar metals like aluminum and copper in HVAC, automotive, and electrical parts. It offers efficiency, quality, and easier post-braze cleaning compared to traditional methods.
Key Characteristics & Benefits:
Self-Fluxing: The flux is integrated into the wire, simplifying the process and making it quicker and more economical.
Uniformity: Ensures the right amount of flux is applied consistently along the joint, reducing inconsistencies and improving quality.
Cleanliness: Reduces spatter, minimizes residue, and makes final cleaning easier.
Strong Bonds: Creates reliable, strong, and corrosion-resistant joints, even with dissimilar metals.
Versatility: Used for joining various metals (e.g., Al to Cu, steel, cast iron) in applications requiring capillary action or braze welding.
How it Works:
Melting: The wire melts under heat (like oxy-fuel or induction), and the filler metal flows into the joint via capillary action.
Flux Action: The internal flux cleans oxide layers from the base metals, preventing re-oxidation and allowing the molten filler metal to bond effectively.
Bonding: A strong metallurgical bond forms between the filler metal and the base metals, creating a durable connection.
Common Applications:
HVAC & Refrigeration (joining Al to Cu)
Automotive Repairs & Manufacturing
Electrical Component Assembly
Hardfacing & Wear Resistance (e.g., using carbide-infused types)
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