Sintered Magnesia 92% with Iron Oxide from China
Dead-burned magnesia containing 92% MgO with controlled iron oxide additions for enhanced sintering, used in basic oxygen furnace refractories. Properly classified in HTS 2519.90.10.00 as sintered magnesia permitting small quantities of other oxides added before sintering.
Duty Rate — China → 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
• Batch certificates must show oxide additions occurred pre-sintering, not post-processing blending
• Iron oxide content >5% may trigger review for micaceous iron oxide classification under 2530.90
• Specify grain sizing (0-5mm typical) matches refractory ramming mix requirements