Ferrite Core Blanks for Transformers
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pre-assembled into complete transformer cores
Finished transformer/inductor parts fall under 8504.90, separate from raw magnet materials.
If containing electrical windings or connections
Wound ferrite cores become electrical apparatus parts under heading 8548.
If imported as basic ceramic shapes without magnetic specification
Pure ceramic articles without magnet intent classify under Chapter 69 pottery.
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Import Tips & Compliance
• 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
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