Tabular Alumina Granules 3-6mm
Tabular alumina granules sized 3-6mm, produced by sintering calcined alumina into dense, alpha-phase crystals, used in refractories. This artificial corundum in grain form, ground and refined, qualifies under HTS 2818.10.20 as chemically defined aluminum oxide. Offers superior thermal shock resistance.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If supplied in crude, unsintered form
Pre-sintering crude grains classify under the unrefined subheading.
If used as a refractory cement binder
When prepared as a cement or mortar mix, it becomes Chapter 38 investment goods.
If chemically converted to aluminum sulfate
Salts of aluminum like sulfates fall under 2833, not pure oxides.
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Import Tips & Compliance
• Submit X-ray diffraction analysis confirming alpha-alumina structure for proper chemically defined status
• Avoid common pitfall of declaring as 'calcined bauxite' which is 2606.00.0060
• For high-volume shipments, consider bonded warehouse storage to manage duties on inventory
Related Products under HTS 2818.10.20
Brown Fused Alumina Grit 24 Mesh
Brown fused alumina grit in 24 mesh size, produced by fusing calcined alumina in electric arc furnaces, is a chemically defined artificial corundum used as an abrasive. It falls under HTS 2818.10.20 due to its granular form, ground and refined for blasting and grinding applications. This high-toughness material contains 95% aluminum oxide.
White Fused Alumina Powder 320 Grit
White fused alumina powder at 320 grit fineness, made from high-purity alumina, serves as a precision abrasive and polishing agent. Classified in HTS 2818.10.20 as refined, pulverized artificial corundum, chemically defined with >99% Al2O3 content. Ideal for metallurgical polishing and high-end coatings.
Reactive Alumina Fine Powder FCPA-12
Reactive alumina fine powder (FCPA-12 grade) with high surface area for ceramic and catalyst production, in pulverized form. As refined artificial corundum, chemically defined per Chapter 28, it imports under HTS 2818.10.20. Sourced from low-soda calcined alumina.
Black Silicon Carbide Grain 16/30 Mesh
Wait, correction: Black silicon carbide is 2849.20; for 2818.10.20 - Pink Fused Alumina 60 Grit with chromium oxide. Pink fused alumina 60 grit, alloyed with Cr2O3 for enhanced hardness, used in precision grinding. Refined grains of artificial corundum classify under HTS 2818.10.20 as chemically defined.
Calcined Alumina A100 Grade Powder
Calcined alumina A100 grade, super fine powder for LED phosphors and ceramics, pulverized and refined. Artificial corundum, aluminum oxide chemically defined, under HTS 2818.10.20. Low soda content <0.3%.
Bauxite Calcined Fines 0-1mm
Note: Calcined bauxite can be artificial corundum if high purity; High-grade calcined bauxite fines 0-1mm for refractory aggregate, meeting artificial corundum definition via alumina fusion. Ground form under HTS 2818.10.20.