Section VI · Inorganic chemicals; compounds of precious metals, rare-earth metals

2818.20

Aluminum oxide, other than artificial corundum

How this code is built
28

Chapter

Inorganic chemicals; compounds of precious metals, rare-earth metals

18

Heading

The product family within the chapter

20

Subheading

The specific good, identical worldwide

The first six digits are the same in every country that uses the Harmonized System. The United States adds two more for the tariff rate and, often, two more for statistics — which is why the rates below are listed against 8- and 10-digit numbers rather than against this code.

How the schedule reaches this code

  1. 28Inorganic chemicals; compounds of precious metals, rare-earth metals
  2. 2818Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide:
  3. Aluminum oxide, other than artificial corundum

Published US duty rates

Duty is set at the 8- or 10-digit line, not at this 6-digit subheading, so more than one rate can sit under this code.

  • 2818.20.00.00Aluminum oxide, other than artificial corundumkg
    General
    Free
    Special (FTA)
    —

    No preferential rate published.

    Column 2
    1.1¢/kg

    Countries without normal trade relations.

This is the listed rate. Antidumping and countervailing duty orders, Chapter 99 actions and preference qualification all change what is actually collected, and classification is a judgement about your goods. Verify with your licensed customs broker before you file.

Other subheadings in heading 2818

Source: U.S. International Trade Commission (USITC) — 2026 HTS Revision 12, released 2026-07-21, published at hts.usitc.gov. A U.S. Government work in the public domain.