High-Temp Samarium-Cobalt Ring Magnet from China
Ring-shaped sintered samarium-cobalt magnet designed for operation in extreme temperatures, commonly used in downhole oilfield tools and turbine generators. HTS 8505.11.0050 applies to its specific sintered metal samarium-cobalt permanent magnet characteristics.
Duty Rate — China → United States
37.1%
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
9903.91.0625%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
Import Tips
• Obtain supplier's coercivity (BHmax) specifications; values >28 MGOe confirm premium SmCo grade for proper valuation
• Declare country of melt/refine for samarium; Section 232 tariffs may apply to certain rare-earth origins
• Use protective nickel plating documentation to prevent corrosion claims during ocean transit