High-Purity Alumina for LEDs
Ultra-fine 99.99% pure aluminum oxide powder for LED substrate manufacturing and electronics ceramics. Falls under HTS 2818.20.00.00 as chemically defined Al2O3 other than artificial corundum.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If doped with elements like silicon for electronic applications in disc/wafers
Doped chemical elements cut into wafers fall under heading 3818 per chapter notes.
If sintered into finished refractory ceramic goods
Containing >50% aluminum oxide refractories are in Chapter 69.
If processed into aluminum carbide form
Carbides of aluminum are specifically classified in heading 2849.
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Import Tips & Compliance
• Submit trace element analysis (<10 ppm impurities) to justify high-purity classification
• Declare intended electronics end-use but classify based on chemical form, not application
• Watch for doping; if silicon-doped for semiconductors, may shift to heading 3818
Related Products under HTS 2818.20.00.00
Calcined Alumina Powder
High-purity calcined aluminum oxide (Al2O3) powder used in ceramic production and refractories. It is chemically defined as aluminum oxide but not processed into artificial corundum, distinguishing it from synthetic gem materials under HTS 2818.20.00.00.
Activated Alumina Desiccant
Porous aluminum oxide beads activated for moisture adsorption in gas drying and water purification. Classified under HTS 2818.20.00.00 as chemically defined aluminum oxide, excluding artificial corundum used for abrasives.
Tabular Alumina for Refractories
Dense, tabular-shaped aluminum oxide grains produced by sintering for high-temperature refractory bricks. Classified in HTS 2818.20.00.00 as aluminum oxide distinct from artificial corundum abrasives.
Alpha Alumina Catalyst Support
Alpha-phase aluminum oxide spheres used as inert support for petroleum refining catalysts. HTS 2818.20.00.00 applies to this chemically defined compound other than artificial corundum.
Reactive Alumina for Ceramics
Fine reactive aluminum oxide powder with high sintering reactivity for technical ceramics. Falls under HTS 2818.20.00.00 as pure aluminum oxide, not artificial corundum.
Aluminum Oxide Polishing Powder
Colloidal-grade aluminum oxide powder for precision optical lens polishing. Chemically defined under HTS 2818.20.00.00, separate from artificial corundum abrasives.