Alloy Steel Bearing Balls for Semiconductor Wafer Crystal Pullers from Mexico
Precision-ground alloy steel balls used in the high-speed rotating mechanisms of Czochralski crystal pullers for growing monocrystalline silicon boules in semiconductor manufacturing. These balls ensure minimal friction and precise alignment under extreme thermal conditions. Classified under HTS 8482.91.0010 as balls of alloy steel for ball bearings.
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
• Verify alloy steel composition meets ASTM standards with material certificates to avoid reclassification as carbon steel
• Include end-use documentation proving semiconductor application for potential duty exemptions under tech agreements
• Ensure sphericity tolerance specs (e.g
• Grade 5 or better) are documented to confirm classification as bearing balls