Sodium Cryolite powder (𝑁𝑎3𝐴𝑙𝐹6) is a critical fluxing agent in welding electrode coatings, functioning to remove metal oxides and lower the melting point of materials to improve, clean, and stabilize the welding arc. It enhances welding flow and fusion, typically used in concentrations of 1-60% for specialized welding rods. White powder with a melting point of approximately 1025∘𝐶. Removes tenacious oxide layers, facilitating better fusion and preventing oxidation during the welding process.