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Harmonized System
U.S. imports of zinc powders and flakes (HS 790390) totaled $3.5M in July 2026, traded with 10 countries.
Importers of Zinc Powders and Flakes paid $3K in duties in July 2026 — an effective duty rate of 0.1% on $3.3M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 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.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
36 shipments/mo
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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Subheading 1 of 2 in heading 7903
Subheading 790390 · $3.5M of $3.6M
ImportsExports
Imports
$3.5MYoY · Pro
Exports
$155KYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 7903903000 | Zinc Powders | $3.5M | 0.09% | 94.04% | $3K |
| 7903906000 | Zinc Flakes | $0 | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7903900000 | Zinc Powders and Flakes | $155K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · July 2026
origin
Germany and Belgium together supply 76% of it.
customs district
destination
entry
rate provision · imports
6.0% enters free of duty; the effective duty rate is 0.09%.