Zirconia Grinding Media Balls from Japan
Sintered zirconia ceramic balls used in ball mills for fine grinding in chemical and pharmaceutical labs. Achieves Mohs hardness of 9+ from yttria-stabilized zirconia, fired per Chapter 69 standards for technical durability. Ideal for abrasion-resistant milling of hard materials.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include material composition analysis showing >9 Mohs; declare as technical grinding media to prevent misclassification as toys or games in Chapter 95
• Watch for bulk packaging that might trigger set classifications