Naval Bronze C46400 Sheet from Mexico
Naval bronze C46400 sheet is a 88% copper, 10% zinc, 1.5% tin alloy sheet, 2 mm thick, 700 mm wide, but tin-focused variant for marine use. Under HTS 7409.39.50.00 as copper-tin bronze since tin qualifies predominance in specific grades per note (b).
Duty Rate — Mexico → United States
51.7%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) of U.S. note 16 to this subchapter
9903.05.900%Articles of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Provide UNS C46400 spec sheet; note zinc <10% allowance for tin ≥3% bronzes
• Marine-grade certs help but not required; focus on dimensional compliance