Czochralski Crystal Puller Ingot Mold from Japan
A specialized ingot mold designed for use in Czochralski crystal growers and pullers to produce monocrystalline silicon boules for semiconductor wafers. It falls under HTS 8454.90.0080 as a part of casting machines used in metallurgy for high-purity semiconductor material production. The mold ensures precise thermal gradients during the crystal growth process.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify material compatibility with silicon melting (e.g
• quartz or graphite) for classification; provide technical specs proving semiconductor end-use to avoid reclassification
• Ensure exporter certificates match HTS description to prevent customs holds