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
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 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