Copper Alloy Wafer Crystal Puller Crucible from Mexico
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 — Mexico → United States
25%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16, 9903.82.20–9903.82.26 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) and (xi) of U.S. note 16 to this subchapter
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
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