Flux for Brazing Alloys from Canada
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 — Canada → United States
65%
Rate breakdown
9903.03.1450%Articles the product of Canada as provided in subdivision (b)(3) of U.S. note 51 to this subchapter
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, 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