U.S. imports of Ferrosilicon with Over 55% Silicon (HS 720221) totaled $13.2M in August 2026, imported from 25 countries.
Importers of Ferrosilicon with Over 55% Silicon paid $653K in duties in August 2026, an average duty rate of 4.93% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Ferrosilicon with Over 55% Silicon imports of $13.2M in August 2026 ran 23% below the year-to-date monthly average of $17.2M.
Last updated: August 2026 dataFerrosilicon above 55% silicon is a critical deoxidizer and alloying agent for carbon steel, stainless steel, and cast iron, and is also a precursor in silicon metal production. The US schedule subdivides this grade by both silicon content and calcium level — distinguishing 55–80% silicon with over 3% calcium (7202211000), 55–80% silicon with 3% or less calcium (7202215000), and material above 90% silicon (7202219000). Canada and Iceland are the leading suppliers, with Iceland's energy-intensive smelting capacity making it a structurally important source. All ferrosilicon imports are subject to Section 232 tariffs, and antidumping orders have historically applied to certain origins.
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202 import shipments a month
Calcium-bearing ferrosilicon (inoculant grade) has distinct metallurgical properties used in cast iron treatment and inclusion shape control in steel. The 3% calcium threshold in lines 7202211000 and 7202215000 separates these specialty inoculant grades from standard deoxidizer-grade material, which affects both classification and, potentially, AD/CVD scope applicability.
Material above 90% silicon approaches the purity of silicon metal (classified in heading 2804) and is used in chemical, semiconductor, and solar-grade silicon production rather than primarily as a steelmaking additive. Importers should carefully review whether very high-purity material might be more correctly classified as silicon metal under Chapter 28, as the boundary between ferrosilicon and silicon metal is a known classification dispute area.
Subheading 7 of 15 in heading 7202
Subheading 720221 · $13.2M of $236.1M
ImportsExports
Imports
$13.2MYoY · free account
Exports
$480KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $193.0M of Ferrosilicon with Over 55% Silicon and exported $5.4M.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
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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 |
|---|---|---|---|---|---|
| 7202215000 | Ferrosilicon Ov 55 Nov 80 Pct Si 3 Pct or Ls Calcm | $13.2M | 4.93% | 61.06% | $653K |
| 7202211000 | Ferrosilicon Ov 55 Nov 80 Pcnt Si Ov 3 Pct Calcium | — | -- | -- | -- |
| 7202219000 | Ferrosilicon Over 90 Percent Silicon | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7202210000 | Ferrosilicon More Than 55 Percent Silicon | $480K |
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 · August 2026
origin
Canada and Norway together supply 49% of it. Norway pays 14.0% duty; Canada 0.0%.
customs district
destination
entry
rate provision · imports
38.9% enters free of duty; duty collected equals 4.93% of imports for consumption.