Copper Alloy Wafer Crystal Puller Crucible from China
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 — China → United States
35%
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
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]
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