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Silicon Steel Stacked Transformer Core from China

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 — China → United States

50%

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
9903.88.0125%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]
9903.05.900%Articles of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter

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

Silicon Steel Stacked Transformer Core from China — Import Duty Rate | HTS 8504.90.96.38