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U.S. exports of high-purity sponge iron and other spongy ferrous products (≥99.94% fe) (HS 720390) totaled $23.4M in July 2026.
Importers of High-Purity Sponge Iron and Other Spongy Ferrous Products (≥99.94% Fe) paid $27K in duties in July 2026 — an effective duty rate of 7.3% on $366K in dutiable value, based on actual customs collections rather than the published tariff schedule. High-Purity Sponge Iron and Other Spongy Ferrous Products (≥99.94% Fe) imports of $384K in July 2026 ran 25% below the year-to-date monthly average of $511K.
Last updated: July 2026 dataUltra-high-purity iron at 99.94% or greater by weight occupies a niche above standard DRI, serving powder metallurgy, specialty magnetics, and precision alloy applications where trace impurities are unacceptable. Japan and China are the leading US suppliers, reflecting their advanced powder-iron and specialty-metal industries. The single tariff line (7203900000) covers both spongy forms and high-purity iron in lumps or pellets, so the critical classification question is whether the iron meets the 99.94% purity threshold — material falling short belongs in heading 7203.10 or elsewhere.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
9 shipments/mo
CBP typically requires a mill certificate or third-party laboratory analysis confirming the iron content by weight meets or exceeds 99.94%. The certificate should identify the test method used (e.g., spectrometric analysis) and accompany the commercial invoice. Discrepancies between declared and tested purity can trigger reclassification into a lower-purity heading.
Powder metallurgy (sintered parts, metal injection molding), soft magnetic components, and specialty alloy production are the primary consumers. The stringent purity requirement excludes most steelmaking applications, making this a relatively low-volume but high-value niche within the broader ferrous materials market.
HSChapter 72
Subheading 2 of 2 in heading 7203
Subheading 720390 · $384K of $54.6M
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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 |
|---|---|---|---|---|---|
| 7203900000 | Othr Spongy Ferrous Prdcts Min Purity 99.94 Pct Fe | $384K | 7.00% | 95.31% | $27K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7203900000 | Spongy Ferrous Prdcts Min Purity 99.94 Pct Fe, Nes | $23.4M |
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.
ImportsExports
Imports
$384KYoY · Pro
Exports
$23.4MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Exports · July 2026
destination
Turkey and Canada together take 100% of it.
customs district
origin
entry
rate provision · imports
4.7% enters free of duty; the effective duty rate is 7.00%.