Heat-Treated Natural Corundum Powder from Mexico
Fine powder derived from naturally occurring corundum ore, thermally treated to enhance friability for polishing applications. Falls under HTS 2513.20.9000 as 'other natural abrasives,' encompassing mineral corundum excluding crude forms.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide geological source documentation proving natural origin, as synthetic corundum (alumina) is excluded and duties elsewhere
• Declare exact particle size distribution; fines under 100 mesh still qualify if not chemically altered
• Watch for reclassification to 2818.10 if purity exceeds 99% Al2O3 resembling artificial aluminum oxide