HS 281820

Aluminum Oxide (Alumina), Except Artificial Corundum

U.S. imports of aluminum oxide (alumina), except artificial corundum (HS 281820) totaled $30.8M in April 2026, traded with 29 countries.

Last updated: April 2026 data

Calcined and hydrated alumina — classified here to exclude artificial corundum — is the primary intermediate in aluminum smelting and a key raw material for advanced ceramics, catalyst supports, and abrasion-resistant coatings, all entering under tariff line 2818200000. Brazil is the leading US import source, reflecting its world-scale Bayer-process refinery capacity, with China and Germany also significant. Importers sourcing from China should assess Section 301 tariff applicability, while Brazilian-origin alumina may qualify for preferential treatment under applicable trade programs.

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Imports

$30.8M

from 29 countries · YTD: $238.8M

Exports

$22.0M

Deficit of $8.8M (net importer)

Trade balance: deficit of $8.8M (net importer)

YTD: $238.8M imported (April 2026)

450 shipments/month

Top Import Sources

View all

1BRAZIL

Import Trend (12 months)

Monthly import values over time

Geographic Breakdown

URANIUM ENRICHED IN U235 ETC. PLUTONIUM ETC.

HS 284420

$450.1M

NATURAL URANIUM & COMPOUNDS, ALLOYS & CERAMICS ETC

HS 284410

$242.8M

ANHYDROUS AMMONIA

HS 281410

$116.5M

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Frequently Asked Questions

How is aluminum oxide under 281820 distinguished from artificial corundum under 281810?

Artificial corundum (281810) is produced by fusing alumina in an electric arc furnace to form a crystalline abrasive product. Aluminum oxide under 281820 covers non-fused forms — including calcined, tabular, and reactive aluminas — used as chemical intermediates, catalyst supports, and ceramic precursors.

What countries supply the most aluminum oxide (non-corundum) to the US?

Brazil is the dominant supplier, driven by its large-scale Bayer-process refining operations, followed by China and Germany. Jamaica and France are also notable sources, particularly for specific grades used in specialty applications.