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HSChapter 79
U.S. imports of zinc powders and flakes (HS 790390) totaled $3.3M in April 2026, traded with 9 countries.
Importers of Zinc Powders and Flakes paid $3K in duties in April 2026 — an effective duty rate of 0.1% on $3.1M in dutiable value, based on actual customs collections rather than the published tariff schedule. Zinc Powders and Flakes imports of $3.3M in April 2026 ran 14% below the year-to-date monthly average of $3.8M.
Last updated: April 2026 dataZinc powders and flakes serve as functional pigments in zinc-rich coatings, as reactive agents in chemical processes, and as components in specialty lubricants and conductive inks. The US schedule separates powders (7903903000) from flakes (7903906000) within this heading, with flake morphology being particularly valued in lamellar coating systems for fasteners and automotive parts. Belgium and Germany lead US imports, consistent with Europe's strong position in specialty zinc chemicals and coating-grade materials.
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The distinction reflects meaningful commercial and functional differences: zinc flakes (7903906000) have a platelet geometry that creates overlapping, barrier-type corrosion protection in lamellar coatings, while zinc powders (7903903000) are more spherical and used in galvanic-type zinc-rich primers and chemical applications. Correct subheading selection requires the supplier to specify particle morphology in the product documentation.
Zinc flakes are primarily consumed in the automotive and construction fastener industries, where lamellar zinc-aluminum coating systems (applied by dip-spin or spray processes) provide corrosion protection without hydrogen embrittlement — a key advantage over electroplating for high-strength steel fasteners. Demand tracks closely with automotive production volumes and infrastructure spending.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 7903903000 | ZINC POWDERS | $3.3M | 0.11% | $3K |
ZINC POWDERS
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7903900000 | ZINC POWDERS AND FLAKES | $114K |
ZINC POWDERS AND FLAKES
43.2K kg
| State | Imports | Exports | Balance |
|---|---|---|---|
| South Carolina | $1.1M | -- | -$1.1M |
| Wisconsin | $500K | $23K | -$477K |
| North Carolina | $422K | -- | -$422K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| WILMINGTON, NC | $857K | -- | -$857K |
| CHARLESTON, SC | $828K | -- | -$828K |
| NORFOLK-NEWPORT NEWS, VA | $426K | -- | -$426K |