Silicon Ingot Slicing Saw Wire Tensioner from Canada
Pneumatic tensioner attachment mounts on multi-wire wafer slicing saws (8429) to maintain diamond wire tension during high-speed slicing of silicon ingots into thousands of wafers simultaneously. 8431.49.9020.
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
• Document wire speed (30-100m/s) and tension force ratings
• Include saw model cross-reference for principal use proof
• Mechanical tensioners for non-semiconductor saws go to 8434