Ferrosilicon Zirconium Inoculant
Ferrosilicon Zirconium Inoculant is a ferrosilicon-based alloy with 2-5% zirconium additions, used for microstructure control in gray iron casting. It is classified under tariff item 7202.29.00 as 'other' ferro-silicon because the zirconium content makes it a complex ferro-silicon beyond standard binary compositions. This inoculant promotes graphite refinement and improves mechanical properties in cast iron.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
PGA flags
No agency flag on this HTS number in the CBSA Single Window matching criteria.
CBSA Single Window matching criteria, unknown
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the zirconium content is below the threshold that makes it a complex alloy
Ferro-silicon with 55-80% silicon and minimal zirconium may be classified as standard ferro-silicon.
If zirconium exceeds 10% by weight
Higher zirconium content would move the product to other ferro-alloys classification.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide a detailed certificate of analysis showing the zirconium percentage (2-5%) and silicon content to support classification under 7202.29.00
• Be aware that CBSA may require proof that the product is used as an inoculant in foundry applications
• Keep records of the product's intended use in gray iron casting to demonstrate its commercial purpose
Related Products under Tariff item 7202.29.00
Atomized Ferrosilicon Powder
Atomized ferrosilicon powder with 75% silicon content, produced by atomization and used in powder metallurgy and welding electrodes. It retains the essential character of ferrosilicon as a ferro-alloy, and atomization does not alter its classification under this tariff item.
Atomized Ferrosilicon Powder 75%
Atomized ferrosilicon powder 75% is a finely atomized ferrosilicon powder with 75% silicon content, used in powder metallurgy and as a raw material for silicon-based compounds. Despite its powder form, it is classified under tariff item 7202.29.00 as 'other' ferro-silicon, as the powder form is not considered 'further working' per the chapter notes.
Crushed Ferrosilicon 10-50mm
Crushed ferrosilicon 10-50mm is crushed ferrosilicon lumps sized 10-50mm from 75% standard grade, optimized for submerged arc furnace feeding. It remains classified under tariff item 7202.29.00 as 'other' ferro-silicon, as crushing is not considered 'further working' per the chapter notes.
Ductile Iron FeSiMg 12% Magnesium Alloy
Ductile iron FeSiMg 12% magnesium alloy is a specialty ferrosilicon magnesium alloy containing 12% magnesium, used as a nodulizing agent in ductile iron production. It is supplied in standard foundry granules. This product falls under tariff item 7202.29.00 as 'other' ferro-silicon because its magnesium content exceeds 2% by weight, which is not covered by other subheadings of heading 72.02.
Electrolytic Ferrosilicon 85%
Electrolytic ferrosilicon 85% is a high-grade ferrosilicon produced via electrolytic process for ultra-low impurity levels in ESR steelmaking. It is classified under tariff item 7202.29.00 as 'other' ferro-silicon, as it does not meet the specifications of other subheadings and is compatible with vacuum arc remelting.
Ferrosilicon 65/70 Grade Lumps
Ferrosilicon lumps with 65-70% silicon content, used in foundries for deoxidation during iron casting. This product falls under this tariff item as 'other' ferrosilicon, not meeting the specifications for other subheadings.