8504.90.96.38/Silicon Steel Stacked Transformer Core/Mexico

Silicon Steel Stacked Transformer Core from Mexico

A laminated stack of silicon steel sheets forming a core designed for assembly into power distribution transformers. These cores provide the magnetic pathway essential for transformer operation and are imported as unfinished components for final winding and enclosure. Classified under HTS 8504.90.96.38 as stacked cores specifically for incorporation into transformers.

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 core material composition (e.g

• grain-oriented silicon steel) via mill test certificates to confirm HTS classification and avoid reclassification as iron articles

• Ensure documentation specifies 'stacked for transformer incorporation' to distinguish from finished cores; include end-use statements for transformer manufacturers

• Watch for weight-based valuation pitfalls; stacked cores often ship in bulk—declare net weight accurately to prevent duty underpayment claims