Copper Alloy Wafer Crystal Puller Crucible from Japan
A high-purity copper alloy crucible used in Czochralski crystal growers for pulling monocrystalline silicon boules in semiconductor wafer manufacturing. It falls under HTS 8431.49.1070 as a part of machinery of heading 8426 (semiconductor processing equipment) made of copper alloys. Essential for containing molten silicon during crystal growth.
Duty Rate — Japan → United States
10%
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 copper alloy composition exceeds 50% copper for classification; provide equipment compatibility certificates
• Ensure RoHS compliance documentation to avoid delays
• Common pitfall: misclassifying as general labware under Chapter 69