Alumina prepared for processing into aluminum
Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide. > Aluminum oxide, other than artificial corundum > Alumina prepared for processing into aluminum
Duty Rate (from China)
Products classified under Tariff item 2818.20.00.10
Activated Alumina Desiccant
Activated alumina desiccant consists of porous aluminum oxide beads engineered for moisture adsorption in gas drying and water purification systems. It is a chemically defined aluminum oxide product, distinct from artificial corundum, and is classifiable under this tariff item as aluminum oxide other than artificial corundum.
2818.20.00Alpha Alumina Catalyst Support
Alpha alumina catalyst support consists of alpha-phase aluminum oxide spheres used as an inert substrate for petroleum refining catalysts. It is a chemically defined aluminum oxide compound, not processed into artificial corundum, and falls under this tariff item as aluminum oxide other than artificial corundum.
2818.20.00Alumina for Sapphire Crystal Growth
Alumina for sapphire crystal growth is a high-purity aluminum oxide powder supplied as a raw material for the Verneuil process to grow synthetic sapphire (artificial corundum). At the time of import, it is a chemically defined aluminum oxide powder, not yet formed into artificial corundum, and is classifiable under this tariff item.
2818.20.00Alumina Hydrate Calcine Intermediate
Alumina hydrate calcine intermediate is a partially calcined aluminum hydroxide material intended for further processing into pigment-grade alumina. It is presented as an aluminum oxide product and is classifiable under this tariff item as aluminum oxide other than artificial corundum, provided it meets the chemical definition of aluminum oxide.
2818.20.00Alumina Trihydrate Fines (Gibbsite)
Alumina trihydrate fines (gibbsite) is a fine aluminum hydroxide powder processed to meet aluminum oxide specifications. While it is chemically aluminum hydroxide, if it is presented as an aluminum oxide product with appropriate processing, it may be classifiable under this tariff item as aluminum oxide other than artificial corundum.
2818.20.00Aluminum Oxide Polishing Powder
Aluminum oxide polishing powder is a colloidal-grade aluminum oxide powder used for precision optical lens polishing. It is a chemically defined aluminum oxide product, distinct from artificial corundum abrasives, and falls under this tariff item as aluminum oxide other than artificial corundum.
2818.20.00Calcined Alumina Powder
Calcined alumina powder is a high-purity calcined aluminum oxide (Al2O3) powder used in ceramic production and refractories. It is chemically defined as aluminum oxide and is not processed into artificial corundum, distinguishing it from synthetic gem materials, and is classifiable under this tariff item.
2818.20.00Fused Mullite-Grade Alumina
Fused mullite-grade alumina is a synthetic aluminum oxide with controlled mullite formation, used for investment casting shells. It is an aluminum oxide product other than artificial corundum and is classifiable under this tariff item as aluminum oxide other than artificial corundum.
2818.20.00High-Purity Alumina for LEDs
High-purity alumina for LEDs is an ultra-fine 99.99% pure aluminum oxide powder used for LED substrate manufacturing and electronics ceramics. It is a chemically defined Al2O3 product other than artificial corundum and falls under this tariff item.
2818.20.00Low-Soda Alumina for Spark Plugs
Low-soda alumina for spark plugs is a special low-sodium aluminum oxide used for ceramic spark plug insulators. It is a chemically defined aluminum oxide product, not artificial corundum, and is classifiable under this tariff item as aluminum oxide other than artificial corundum.
2818.20.00Nano-Alumina Particles
Nano-alumina particles are nanometer-sized aluminum oxide particles used for advanced composites and coatings. They are a pure chemically defined compound under this tariff item as aluminum oxide other than artificial corundum.
2818.20.00Reactive Alumina for Ceramics
Reactive alumina for ceramics is a fine reactive aluminum oxide powder with high sintering reactivity for technical ceramics. It is pure aluminum oxide, not artificial corundum, and falls under this tariff item as aluminum oxide other than artificial corundum.
2818.20.00Tabular Alumina for Refractories
Tabular alumina for refractories consists of dense, tabular-shaped aluminum oxide grains produced by sintering for high-temperature refractory bricks. It is classifiable under this tariff item as aluminum oxide distinct from artificial corundum abrasives.
2818.20.00Technical-Grade Alumina Powder
Technical-grade alumina powder is a standard 99%+ Al2O3 powder used for general industrial fillers and extenders. It is a standard chemically defined aluminum oxide product of this tariff item as aluminum oxide other than artificial corundum.
2818.20.00White Fused Alumina Fines
White fused alumina fines are a fine powder byproduct from white fused aluminum oxide production, used in precision casting. They are still classified as aluminum oxide under this tariff item if not artificial corundum grade, and are classifiable as aluminum oxide other than artificial corundum.