Flux for Brazing Alloys from Mexico
Chloride-free boric acid-borate mixture for high-temperature brazing of copper alloys. 3824.99.93 covers this soldering preparation not specified elsewhere. Removes oxides during joining.
Duty Rate — Mexico → United States
15%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Distinguish from 3810 fluxes by temperature/use
• pH and residue analysis for CBP
• Bulk vs retail packaging affects subheading