Precision Copper Balls for Float Zone Crystal Grower Bearings from Mexico
High-purity copper alloy balls for vacuum bearings in float zone crystal growers that produce semiconductor boules from polycrystalline silicon rods. Classified under HTS 8482.91.0015 due to statistical note 6 designation for copper alloy balls in semiconductor material growth equipment. Essential for precise rotation control in ultra-clean processing.
Duty Rate — Mexico → United States
14.4%
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 technical specs showing tolerance levels (e.g
• sphericity <1μm) proving semiconductor-grade precision
• Submit end-user statements confirming incorporation into statistical note 6 equipment
• Verify RoHS compliance documentation for cleanroom certification