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Samarium Cobalt Ring Magnets from China

SmCo5 ring-shaped permanent magnets constructed from samarium-cobalt metal alloy, known for high-temperature resistance up to 350°C. Intended for aerospace and military applications, often magnetized post-import. Fits HTS 8505.11.00 due to metal composition and permanent magnet designation.

Duty Rate — China → United States

39.6%

Rate breakdown

9903.91.0625%Effective with respect to entries on or after January 1, 2026, articles the product of China, as provided for in subdivision (g) of U.S. note 31 to this subchapter
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China

Import Tips

Provide heat treatment specs and Curie temperature data to confirm high-temp suitability under metal magnet classification

ITAR/EAR export control checks required for defense applications; declare cobalt content accurately

Avoid bulk packaging that resembles scrap, which could shift to 8549.11 spent battery materials