Copper Alloy Bearing Balls for Semiconductor Wafer Crystal Pullers from Japan
Precision copper alloy balls used in high-vacuum bearings of Czochralski crystal pullers for growing monocrystalline silicon boules in semiconductor manufacturing. These balls fall under HTS 8482.91.0015 as they are specifically balls of copper alloys as per statistical note 6 to chapter 84, intended for semiconductor processing equipment. Their non-magnetic properties and corrosion resistance suit cleanroom environments.
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
• Provide documentation proving use in semiconductor manufacturing equipment per statistical note 6 to qualify for preferential treatment
• Ensure supplier certifications confirm copper alloy composition and semiconductor application
• Avoid misclassification by specifying end-use in commercial invoice