U.S. exports of Unwrought Copper-Tin Alloys (Bronze) (HS 740322) totaled $2.6M in August 2026.
Importers of Unwrought Copper-Tin Alloys (Bronze) paid $40K in duties in August 2026, an average duty rate of 6.70% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Unwrought Copper-Tin Alloys (Bronze) imports of $592K in August 2026 ran 19% below the year-to-date monthly average of $733K.
Last updated: August 2026 dataBronze — copper alloyed principally with tin — is a primary input for bearings, bushings, marine hardware, sculpture casting, and industrial wear components, where its combination of strength, corrosion resistance, and low friction is valued. Spain leads US import supply, followed by Canada and India. Classified under the single line 7403220000, unwrought bronze must be distinguished from phosphor bronze, aluminum bronze, and other copper alloys that may carry tin but are classified as copper alloys NESOI (740329) if another element predominates or defines the alloy family.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
28 import shipments a month
Classification depends on which element, after copper, gives the alloy its defining character. A copper-tin alloy with a small phosphorus addition for deoxidation is still classified as bronze under 7403220000 if tin is the primary alloying element. However, if another element such as aluminum or nickel predominates or defines the alloy's commercial identity, the material may fall under the NESOI copper alloys heading 740329. Alloy composition certificates and the producer's commercial designation are key supporting documents.
Primary demand comes from bearing and bushing manufacturers, marine equipment producers, and art foundries. Industrial bearing demand tends to track capital equipment and infrastructure investment cycles rather than seasonality, while art and architectural bronze demand is project-driven. Importers supplying foundries should anticipate lead-time variability tied to project schedules rather than predictable seasonal peaks.
Subheading 5 of 7 in heading 7403
Subheading 740322 · $2.6M of $184.1M
ImportsExports
Imports
$592KYoY · free account
Exports
$2.6MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $8.3M of Unwrought Copper-Tin Alloys (Bronze) and exported $25.2M.
Through August 2026. Source: U.S. Census Bureau.
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 7403220000 | Unwrought Copper-Tin Based Alloys (Bronze) | $592K | 6.70% | 97.22% | $40K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7403220000 | Unwrought Copper-Tin Based Alloys (Bronze) | $2.6M |
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.
Exports · August 2026
destination
Mexico and Germany together take 68% of it.
customs district
origin
entry
rate provision · imports
2.8% enters free of duty; duty collected equals 6.70% of imports for consumption.