Copper Heat Exchanger for Semiconductor Wafer Processing Chamber from Canada
A copper alloy heat exchanger designed specifically for temperature control in vacuum chambers of semiconductor wafer processing machinery under heading 8426. It facilitates precise thermal management during crystal growth and wafer fabrication processes. Classified under 8431.49.90.92 due to its construction from copper alloys and principal use with 8426 machinery for semiconductor manufacturing.
Duty Rate — Canada → 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 the part is solely for 8426/8429/8430 machinery via engineering specs to avoid reclassification to general parts
• Provide manufacturer affidavits confirming copper alloy composition (>50% copper) and semiconductor end-use