Electro-fused Magnesia 98% Purity from Mexico
High-purity electro-fused magnesia produced by melting magnesite in an electric arc furnace at temperatures exceeding 2800°C, resulting in a dense crystalline structure. Classified under HTS 2519.90.10.00 as fused magnesia, ideal for refractory linings in steelmaking due to its high resistance to slag and thermal shock.
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
• Verify certificate of analysis confirming >95% MgO content and fused production method to avoid reclassification as precipitated magnesium oxide under 2816.10
• Include mill test reports documenting sintering temperature (>1600°C for dead-burned) and bulk density to demonstrate compliance with fused/dead-burned definitions