2818Artificial corundum
HTS Code 2818 covers any article best defined as Products of the Chemical or Allied IndustriesInorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopesArtificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide: in the Harmonized Tariff Schedule — covering 3 sub-classifications.
Tariff updates
Recent US tariff actions that name 2818 or its heading.
- Dec 18, 2025 · PublishedUS cuts reciprocal tariff on Swiss and Liechtenstein goods to 15% all-in, exempts certain products
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If a new 10% tariff were added
Relevant HTS Notes
Official USITC notes that may affect classification under HTS 2818.
Search CROSS Rulings for HTS 2818
See how Customs classified similar products. CBP's CROSS database holds the classification rulings that cite 2818.
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What does HTS code 2818 cover?
HTS code 2818 covers artificial corundum (Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide:), classified under Chapter 28 (Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes) in the US Harmonized Tariff Schedule. There are 3 more specific sub-classifications under this code.
Primary Sources
The official documents behind the rates and tariffs on this page. Duties are worked out from them; check the legal text before you file.