Float Zone Furnace Seed Rotation Shaft from Mexico
Tungsten or molybdenum shaft attachment that mounts in float zone furnaces (8429) to precisely rotate silicon seed rods during zone refining for ultra-pure semiconductor material growth. Withstands 2000°C. 8431.49.9020.
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
• Material purity (99.999%) and rotation speed specs essential
• Vacuum furnace compatibility certification required
• General shafts classify under 8483.10