Silicon Steel Laminations for Power Transformer Cores from Mexico
Thin silicon steel sheets designed for stacking into laminated cores used in electrical power transformers. These laminations reduce eddy current losses through electrical insulation between layers. Classified under HTS 8504.90.96.34 as laminations specifically for incorporation into stacked cores of 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)
Import Tips
• Verify lamination thickness and insulation coating meet transformer core stacking specifications to avoid reclassification
• Provide manufacturer specs confirming use solely for stacked transformer cores, not wound cores
• Check for steel origin certificates as anti-dumping duties may apply to certain silicon steel imports