High Temperature SmCo17 Disc Magnets from China
SmCo17 grade disc magnets rated to 350°C continuous operation, metal rare earth alloy for downhole oilfield tools and automotive alternators. Exceptional demagnetization resistance. HTS 8505.11.0070 classification for metal permanent magnets.
Duty Rate — China → United States
39.6%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 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
• Temperature rating certification mandatory for duty preference claims
• Oilfield end-use may trigger BIS export controls even on imports
• Batch coercivity testing prevents down-grading to lower SmCo grades