Ferrite Core Blanks for Transformers from China
Unmagnetized ferrite cores made from manganese-zinc or nickel-zinc materials, designed for permanent magnet use in transformer and inductor applications after magnetization. These soft magnetic blanks fit 'articles intended to become permanent magnets' in 8505.90.75.01.
Duty Rate — China → United States
36.3%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 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]
Import Tips
• Provide engineering specs showing intended magnetization and end-use to distinguish from finished cores
• Include heat treatment certifications, as ferrite properties depend on sintering processes
• Label clearly as 'unmagnetized blanks' to prevent confusion with ready-to-use transformer parts