Other
Converters, ladles, ingot molds and casting machines, of a kind used in metallurgy or in metal foundries, and parts thereof: > Casting machines > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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]
Products classified under HTS 8454.30.00.90
Crystal Ingot Slicing Saw
Precision diamond wire saws slice monocrystalline boules into thin semiconductor wafers with minimal kerf loss. Included in HTS 8454.30.00.90 as wafer slicing equipment under statistical note (a)(ii)(B) for metallurgical casting processes.
Directional Solidification Furnace
Furnaces using Bridgman or heat exchanger methods for controlled semiconductor ingot solidification from melt. Classified under HTS 8454.30.00.90 as other metallurgical casting machines for crystal growth per statistical notes.
Boule Diameter Grinder
Automated grinders that shape crystal boules to precise wafer diameters with orientation flats for conductivity indication. HTS 8454.30.00.90 statistical note (a)(ii)(A) specifically covers crystal grinders as metallurgical casting equipment.
Crystal Boule Grinder
Crystal boule grinders precisely shape semiconductor crystal ingots to exact diameters and flats indicating conductivity type before wafer slicing. This machine is an 'other' casting machine part under HTS 8454.30.00.90 for metallurgical preparation of semiconductor materials.
Czochralski Crystal Puller
A Czochralski crystal puller is a specialized casting machine used in semiconductor manufacturing to grow monocrystalline silicon boules from molten material by slowly pulling a seed crystal. It falls under HTS 8454.30.00.90 as 'other' casting machines of a kind used in metallurgy for producing high-purity ingots essential for wafer production.
Float Zone Crystal Grower
Float zone crystal growers use a floating molten zone to purify and grow monocrystalline semiconductor ingots, particularly for high-resistivity silicon wafers. Classified under HTS 8454.30.00.90 as other casting machines in metallurgy for semiconductor boule production.
Semiconductor Ingot Casting Furnace
High-vacuum ingot casting furnaces melt and control crystallization of silicon or gallium arsenide for semiconductor boule formation in metallurgical processes. Falls under HTS 8454.30.00.90 as other casting machines specialized for semiconductor metallurgy.
Wafer Preparation Lapping Machine
Lapping machines for semiconductor wafers achieve ultra-flat surfaces by abrasive slurry processing after boule slicing, essential for fabrication readiness. Classified as other casting machines under HTS 8454.30.00.90 per statistical notes for wafer preparation in metallurgy.
Gallium Arsenide Boule Puller
Specialized pullers for growing GaAs compound semiconductor boules using liquid-encapsulated Czochralski methods in metallurgical casting setups. HTS 8454.30.00.90 covers this as other casting machines explicitly noted for gallium arsenide processing.
Silicon Wafer Polishing Machine
Chemical-mechanical polishing (CMP) machines flatten semiconductor wafers to atomic-level smoothness for device fabrication. HTS 8454.30.00.90 includes this as other wafer preparation equipment (statistical note a)(ii)(C) in metallurgy casting context.