Copper Crystal Boule Grinder Chuck from Germany
Copper chuck holder for securing semiconductor crystal boules during grinding to precise diameters in 8426 equipment. Classified HTS 8431.49.1070 as copper alloy part for wafer manufacturing crystal grinders. Features conductivity flat grinding per statistical description.
Duty Rate — Germany → United States
25%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16, 9903.82.20–9903.82.26 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) and (xi) 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
• Include blueprints showing 8426 integration; alloy certification mandatory
• Beware contamination risks—use vacuum-sealed shipping
• Pitfall: general chucks to 8466