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HSChapter 72
U.S. imports of ferrosilicon with over 55% silicon (HS 720221) totaled $21.9M in July 2026, traded with 25 countries.
Importers of Ferrosilicon with Over 55% Silicon paid $1.1M in duties in July 2026 — an effective duty rate of 8.1% on $13.7M in dutiable value, based on actual customs collections rather than the published tariff schedule. Ferrosilicon with Over 55% Silicon imports of $21.9M in July 2026 ran 23% above the year-to-date monthly average of $17.8M.
Last updated: July 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.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
211 shipments/mo
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 4 of 15 in heading 7202
Subheading 720221 · $21.9M of $229.1M
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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 |
|---|---|---|---|---|---|
| 7202215000 | Ferrosilicon Ov 55 Nov 80 Pct Si 3 Pct or Ls Calcm | $21.8M | 5.03% | 62.20% | $1.1M |
| 7202211000 | Ferrosilicon Ov 55 Nov 80 Pcnt Si Ov 3 Pct Calcium | $71K | 11.10% | 100.00% | $8K |
| 7202219000 | Ferrosilicon Over 90 Percent Silicon | $0 | -- | -- | -- |
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 | $264K |
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
$21.9MYoY · Pro
Exports
$264KYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Iceland and Angola together supply 43% of it.
customs district
destination
entry
rate provision · imports
37.7% enters free of duty; the effective duty rate is 5.05%.