Acid grade fluorspar powder πΆππΉ2 >97% is a critical, high-purity ingredient used in welding electrodes to act as a fluxing agent, shielding gas producer, and arc stabilizer, enhancing weld quality and reducing impurities. While metallurgical grade can be used for some applications, acid grade typically 97% or higher πΆππΉ2 is preferred for its higher purity and lower contaminant levels. It is blended into the coating formulation of SMAW electrodes