Flux market segmentation mirrors the material side, with application categories identical to those used for brazing alloys—automotive, aerospace, HVAC, electronics, and general manufacturing—each imposing specific flux performance criteria such as residue control, corrosion protection, and activation temperature. Within the types dimension, fluxes are classified as water‑soluble, acid‑based, rosin‑based, and no‑clean formulations. Water‑soluble fluxes dominate the automotive and HVAC segments (≈45% of flux volume) because of their ease of post‑process cleaning. Acid‑based fluxes are preferred in aerospace applications (≈30%) where aggressive oxide removal is essential for joint integrity. Rosin‑based fluxes, accounting for roughly 15%, are common in electronics where low‑residue characteristics are critical. No‑clean fluxes, representing about 10%, are gaining traction in general manufacturing due to reduced cleaning steps and lower environmental impact. This application‑type matrix quantifies each segment’s contribution to the total flux market, reinforcing the overall market taxonomy.