Flux Paste for Aluminum Brazing from Japan
A chloride-based paste that cleans and protects aluminum surfaces during high-temperature brazing operations. Classified under HTS 3810.90.5000 as an auxiliary preparation for brazing, it prevents oxidation and ensures strong joints in HVAC components. This subheading captures specialized fluxes beyond basic soldering types.
Duty Rate — Japan → United States
15%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Provide detailed composition analysis to distinguish from general soldering fluxes under 3810.10
• Comply with DOT hazardous shipping for corrosive pastes; use UN 3264 classification
• Test for post-braze residue corrosivity to avoid environmental discharge violations