Crystal Boule Diameter Grinding Roll from Canada
Heavy-duty cast steel roll for grinding semiconductor crystal boules to precise diameters prior to wafering, under 2,268 kg. HTS 8455.30.0035 covers this as cast steel rolls for mills in semiconductor material preparation. Achieves tolerances critical for wafer uniformity.
Duty Rate — Canada → United States
15%
Rate breakdown
9903.82.1015%Except as provided for in headings 9903.82.12, 9903.82.17 and 9903.85.68, derivative aluminum and steel articles with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 15 percent, as provided for in subdivision (f) 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 grind wheel interface specs for process verification
• Avoid alloy misdeclaration; specify exact steel grade (e.g
• 4140 modified)
• Bundle with related equipment invoices for set classification consideration