Hastelloy Semiconductor Wafer Polisher Feedwater Valve Body from China
Hastelloy C-276 valve body for ultrapure feedwater systems in chemical mechanical wafer polishers achieving mirror-finish semiconductor surfaces. Falls under HTS 8481.90.9060 as valve body for wafer preparation polishers in statistical note (a)(ii)(C). Resists acidic polishing slurries in CMP processes.
Duty Rate — China → United States
50%
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
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [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
• Test and document corrosion resistance in CMP slurry chemistries
• Reference statistical note for polishers bringing wafers to fabrication tolerances
• Ensure proper declaration of 'valve bodies' vs 'valves' to avoid assembly disputes