Float Zone Crystal Grower RF Coil Housing from Japan
The RF coil housing is an essential component of float zone crystal growers that melt and purify silicon rods to produce semiconductor-grade crystals. Classified under HTS 8479.90.95.65 as parts of metal treating machines for semiconductor material processing.
Duty Rate — Japan → 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
• Provide process flow documentation showing RF housing's role in zone refining of semiconductor silicon
• Include material certificates confirming high-temperature alloys suitable only for crystal growth equipment
• Avoid bulk shipments without clear identification as semiconductor-specific replacement parts