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SITCSection 6
U.S. imports of ferrosilicon (SITC 67151) totaled $21.7M in April 2026, traded with 26 countries.
Importers of Ferrosilicon paid $1.1M in duties in April 2026 — an effective duty rate of 9.8% on $10.9M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataFerrosilicon is a foundational alloying and deoxidizing agent used across carbon steel, stainless steel, and cast iron production, with silicon content typically ranging from 15% to over 90% depending on the grade. Silicon content percentage is the primary commercial and classification variable — higher-silicon grades (above 55% Si) are used in electrical steel and chemical silicon production, while lower-silicon grades serve as deoxidizers in bulk steelmaking. Section 232 tariffs apply to ferrosilicon imports, and antidumping orders have historically targeted specific origins, making origin documentation and scope analysis essential for procurement teams.
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Commercial ferrosilicon grades range from roughly 15% to 90%+ silicon. Lower-silicon grades (15–45% Si) are primarily used as deoxidizers and inoculants in steelmaking and foundry applications. Higher-silicon grades (above 55–75% Si) are used in electrical steel production and as a precursor to metallurgical-grade silicon. The silicon percentage is declared on the commercial invoice and mill certificate and is the key variable customs authorities use to verify classification.
Antidumping duty orders on ferrosilicon from certain countries have been in place at various times, and Section 232 tariffs also apply to ferrosilicon as a steel-related product. Importers should consult the Commerce Department's current order list and confirm the country of origin and silicon grade fall outside any active scope before finalizing supplier contracts.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | $8.4M | $396K | -$8.0M |
| NORWAY | $2.8M | -- | -$2.8M |
| AZERBAIJAN | $2.3M | -- | -$2.3M |
| ANGOLA | $2.3M | -- | -$2.3M |
| ICELAND | $1.2M | -- | -$1.2M |
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Monthly import values over time