8431.49.90.81/Czochralski Crystal Puller Forged Steel Crucible Holder/Mexico

Czochralski Crystal Puller Forged Steel Crucible Holder from Mexico

This forged steel component is a precision-machined holder for the crucible in Czochralski crystal pullers used in semiconductor wafer manufacturing equipment under heading 8426. It supports the high-temperature growth of monocrystalline silicon boules, ensuring stability during the pulling process. Classified under 8431.49.90.81 as a steel forging part solely for semiconductor processing machinery.

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)

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Import Tips

• Verify the forging certification and material composition (e.g

• high-purity steel) to confirm suitability solely for semiconductor equipment under statistical notes

• Include detailed engineering drawings and end-use statements proving principal use with heading 8426 machinery to avoid misclassification

• Watch for anti-dumping duties on certain steel forgings; declare exact alloy specs to prevent customs holds