NAICSSector 33
U.S. imports of secondary smelting, refining & alloying of nonferrous metals (except copper & aluminum) (NAICS 331492) totaled $19.2M in April 2026, traded with 35 countries.
Importers of Secondary Smelting, Refining & Alloying of Nonferrous Metals (Except Copper & Aluminum) paid $510K in duties in April 2026 — an effective duty rate of 5.2% on $9.9M in dutiable value, based on actual customs collections rather than the published tariff schedule. Secondary Smelting, Refining & Alloying of Nonferrous Metals (Except Copper & Aluminum) imports of $19.2M in April 2026 ran 12% below the year-to-date monthly average of $21.8M.
Last updated: April 2026 dataSecondary metallurgy — re-melting scrap, refining to specification, and blending custom alloy compositions — for nonferrous metals outside the copper and aluminum sectors forms the core of this NAICS segment. Metals processed here include zinc, lead, tin, nickel, cobalt, and precious-metal-bearing secondary materials, with output ranging from refined ingot and slab to master alloys used by foundries and fabricators. The segment is closely linked to global scrap markets and recycled-content supply chains, making it sensitive to fluctuations in secondary raw material availability and to export controls on scrap in key supplier countries.
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Secondary smelting uses scrap, dross, or other recycled feedstocks rather than mined ore concentrates. For trade professionals, this distinction matters because imported secondary feedstocks (scrap and residues) are classified under different HTS chapters than primary ores or refined metal, and may be subject to different duty rates, export licensing requirements in the country of origin, or Basel Convention controls on hazardous waste shipments.
Importers of nonferrous scrap and secondary materials must verify EPA and CBP requirements for hazardous waste exclusions, confirm that the material meets the definition of a commodity rather than a regulated waste under RCRA, and check whether the exporting country imposes export restrictions or licensing on scrap. Certain lead- and cadmium-bearing secondary materials may also trigger EPA import notification requirements.
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No geographic breakdown available
U.S. trade for this product is not broken down by state or port in the latest Census Bureau release.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| HONG KONG | -- | $155.5M | +$155.5M |
| FRANCE | $168K | $24.7M | +$24.5M |
| MEXICO | $531K | $18.8M | +$18.3M |
| TAIWAN | -- | $17.1M | +$17.1M |
| KOREA, SOUTH | $249K | $15.7M | +$15.4M |
Monthly import values over time