Ceramic Silicon Nitride Bearing Balls from China
Non-corrodible silicon nitride ceramic balls for high-speed bearings in crystal grinders used in semiconductor boule preparation. These balls provide superior wear resistance and low thermal expansion for precise diameter grinding. Falls under HTS 8482.91.0090 as 'other' bearing balls.
Duty Rate — China → United States
41.9%
Rate breakdown
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Include ceramic material purity certificates (>99% Si3N4) for duty verification; comply with REACH for non-steel materials; segregate from metallic balls to prevent contamination