Metallurgical Grade Magnesite from Mexico
Medium-purity natural magnesite (90% MgCO3) specifically sized for dead-burning into refractory bricks used in steel furnaces. Remains under HTS 2519.10.00.00 as the uncalcined natural carbonate mineral.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Specify loss-on-ignition (LOI) values (45-50%) confirming carbonate nature vs pre-calcined material
• Include end-use letters from steel mills verifying refractory application for potential duty drawback
• Monitor Australian/Chinese origin quotas as major suppliers face periodic trade restrictions