# United States tariff lines under HS 2818.10

> The United States tariff splits HS 2818.10 (artificial corundum, whether or not chemically defined) into 3 national lines: 2818.10.10.00 (crude), 2818.10.20.10 (white, pink or ruby, containing more than 97.5 percent by weight of aluminum oxide) and 2818.10.20.90 (other). The general (MFN) duty differs by line: free on 2818.10.10.00, 1.3% on 2818.10.20.10 and 1.3% on 2818.10.20.90.

Source: https://border.bot/countries/united-states/hs-codes/281810
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 28](https://border.bot/countries/united-states/hs-codes/28) / [2818.10](https://border.bot/countries/united-states/hs-codes/281810)

## Key facts

- HS subheading: [2818.10](https://border.bot/hs-codes/281810)
- National lines: 3
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes

## United States lines under 2818.10

The United States tariff splits HS 2818.10 (artificial corundum, whether or not chemically defined) into 3 national lines: 2818.10.10.00 (crude), 2818.10.20.10 (white, pink or ruby, containing more than 97.5 percent by weight of aluminum oxide) and 2818.10.20.90 (other).

The general (MFN) duty differs by line: free on 2818.10.10.00, 1.3% on 2818.10.20.10 and 1.3% on 2818.10.20.90.

- [2818.10.10.00](https://border.bot/countries/united-states/hs-codes/2818101000) Artificial corundum, whether or not chemically defined, Crude. Duty (MFN): free
- [2818.10.20.10](https://border.bot/countries/united-states/hs-codes/2818102010) Artificial corundum, whether or not chemically defined, In grains, or ground, pulverized or refined, White, pink or ruby, containing more than 97.5 percent by weight of aluminum oxide. Duty (MFN): 1.3%
- [2818.10.20.90](https://border.bot/countries/united-states/hs-codes/2818102090) Artificial corundum, whether or not chemically defined, In grains, or ground, pulverized or refined, Other. Duty (MFN): 1.3%

## In other countries

No other national tariff on border.bot has live lines under 2818.10 yet.

- [The Harmonized System text for 2818.10](https://border.bot/hs-codes/281810)

- Previous subheading: [2817.00](https://border.bot/countries/united-states/hs-codes/281700) Zinc oxide; zinc peroxide
- Next subheading: [2818.20](https://border.bot/countries/united-states/hs-codes/281820) Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2818.10?

The United States tariff splits HS 2818.10 (artificial corundum, whether or not chemically defined) into 3 national lines: 2818.10.10.00 (crude), 2818.10.20.10 (white, pink or ruby, containing more than 97.5 percent by weight of aluminum oxide) and 2818.10.20.90 (other).

### What is the duty on HS 2818.10 in the United States?

The general (MFN) duty differs by line: free on 2818.10.10.00, 1.3% on 2818.10.20.10 and 1.3% on 2818.10.20.90.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/281810.json