Copper Alloy Semiconductor Wafer Polisher Ring from Canada
Retaining ring made of copper alloy for chemical-mechanical wafer polishers in 8426 machinery, ensuring wafer edge uniformity. HTS 8431.49.1070 for copper parts dedicated to semiconductor wafer prep per chapter notes. Vital for mirror-finish surfaces required in chip fabrication.
Duty Rate — Canada → United States
25%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) of U.S. note 16 to this subchapter
9903.03.060%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; and semiconductor articles, of any country, as provided in subdivision (aa)(v) of U.S. note 2 to this subchapter
Import Tips
• Certify copper content and semiconductor-only use; prepare for CBP Ruling requests
• Track wear rates in documentation
• Common issue: sets with non-copper parts may reclassify