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3810.90.10.00/Styrene-Enhanced Brass Brazing Flux/Mexico

Styrene-Enhanced Brass Brazing Flux from Mexico

Liquid flux for brazing brass fittings containing styrene derivatives (>5% aromatics) to improve wetting and capillary action. Classified under HTS 3810.90.10.00 for brazing auxiliaries.

Duty Rate — Mexico → United States

16.5%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Test flux on specific brass alloys; comply with plumbing code certifications

• Pitfall: incorrect brazing vs soldering designation