High-Purity Copper Balls for Wafer Lapping Machine Thrust Bearings from Canada
Ultra-pure copper alloy balls for thrust bearings in wafer lappers that achieve flatness tolerances critical for semiconductor fabrication. Classified HTS 8482.91.0015 per statistical note 6 for copper balls in wafer preparation equipment. Provides contamination-free load distribution during lapping.
Duty Rate — Canada → United States
14.4%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Require particle count certification (<10 particles >0.5μm)
• Submit lapping machine blueprints showing bearing placement
• Monitor for oxidation—specify inert atmosphere packaging