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8454.90.00.80/Gallium Arsenide Ingot Mold Assembly/Japan

Gallium Arsenide Ingot Mold Assembly from Japan

Precision machined mold assembly for casting GaAs compound semiconductor ingots in metallurgical crystal pullers. Under HTS 8454.90.0080 as parts of casting machines for metal foundries producing semiconductor materials.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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Import Tips

• Certify GaAs compatibility to distinguish from silicon molds; use ISPM-15 for wooden crates

• Pitfall: incomplete BOM leading to part-vs-assembly disputes