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HSChapter 72
U.S. imports of ferrosilicon with 55% or less silicon (HS 720229) totaled $4.4M in April 2026, traded with 12 countries.
Importers of Ferrosilicon with 55% or Less Silicon paid $50K in duties in April 2026 — an effective duty rate of 9.0% on $551K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataLow-silicon ferrosilicon, containing 55% or less silicon by weight, is further differentiated in the US schedule by magnesium content: material with over 2% magnesium (7202290010) is a nodularizing agent used in ductile iron production, while the 2%-or-less magnesium grade (7202290050) serves conventional deoxidizing and alloying roles. Canada, Thailand, and Brazil are the leading suppliers. Like all ferrosilicon, this heading is subject to Section 232 tariffs, and the magnesium-content split is a classification detail that foundry importers frequently overlook.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Ferrosilicon with over 2% magnesium (7202290010) is specifically formulated as a magnesium-ferrosilicon (MgFeSi) nodularizer for converting graphite morphology in ductile iron. Foundries importing this grade must classify it on the correct line, as misclassifying it as standard low-silicon ferrosilicon (7202290050) could trigger a CBP inquiry and potential reclassification with back duties.
AD/CVD orders on ferrosilicon are scope-specific and may or may not extend to the low-silicon grades depending on the order's product definition. Importers should check the current scope of any applicable orders with the Department of Commerce and confirm with a licensed customs broker, as scope coverage can differ between the 55%-or-less and over-55% silicon categories.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 7202290010 | FERROSILICON OV 2 PCT MAGNESIUM 55 PCT OR LS SILCN | $3.1M | 10.00% | $50K |
| 7202290050 | FERROSILICON 2 PCT OR LS MAGNESIUM 55 PCT OR LS SI | $1.2M | 0.00% | -- |
FERROSILICON OV 2 PCT MAGNESIUM 55 PCT OR LS SILCN
FERROSILICON 2 PCT OR LS MAGNESIUM 55 PCT OR LS SI
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7202290000 | FERROSILICON, 55 PERCENT OR LESS SILICON | $520K |
FERROSILICON, 55 PERCENT OR LESS SILICON
272.8K kg
NONALLOY PIG IRON 0.5 PRCNT OR LESS PHOSPHORUS
HS 720110
SEMIFINISHED PRODUCTS OF ALLOY STEEL NOT STAINLESS
HS 722490
SMFD IRN/NAL STL LT .25 PCT CRB RECT CS WID 2X THK
HS 720712
FR IOS NAL 600MM AO W TIN CTD OR PLTD UNDR 0.5MM T
HS 721012
FERROUS WASTE & SCRAP NESOI, TURNINGS, CHIPS ETC
HS 720441
FERROUS WASTE & SCRAP NESOI
HS 720449
| State | Imports | Exports | Balance |
|---|---|---|---|
| Wisconsin | $911K | -- | -$911K |
| Pennsylvania | $610K | $7K | -$603K |
| Ohio | $271K | $288K | +$16K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| PORT HURON, MI | $2.3M | $56K | -$2.3M |
| DETROIT, MI | $505K | -- | -$505K |
| BUFFALO-NIAGARA FALLS, NY | $395K | $62K | -$332K |