White Calcined Alumina 99.8% for Refractories from China
White calcined alumina grains with 99.8% Al2O3 content, thermally processed for low soda impurities in refractory production. Meets HTS 2818.10.20.10 criteria as white artificial corundum, ground form exceeding purity threshold. Essential for high-temperature kiln linings.
Duty Rate — China → United States
8.8%
Rate breakdown
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Certify soda content (<0.3%) alongside Al2O3 purity to support classification
• Document alpha-phase crystal structure confirming artificial corundum nature
• Beware bulk packaging mislabeled as finished refractories; declare as raw material