FeSiCa 65/6 Nodularizer Alloy
High-calcium ferrosilicon with 65% Si and 6% Ca content, specifically formulated for magnesium treatment in ductile iron foundries. Falls under HTS 7202.21.10.00 as ferrosilicon 55-80% Si with >3% calcium per U.S. note specifications. Distributed in sealed moisture-proof containers.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If silicon content outside 55-80% range but still ferrosilicon with calcium
Other silicon percentages have separate statistical suffixes.
If used primarily as a chemical reagent rather than metallurgical additive
Carbides and chemical preparations of silicon may classify under Chapter 28.
If sold as foundry additive mixture with rare earths or magnesium
Prepared foundry additives with multiple components classify as mixtures.
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Import Tips & Compliance
• Customs requires certificates of analysis showing exact Ca/Si ratios; digital spectro reports preferred
• Declare proper UN 1408 hazardous class for ferrosilicon transport to avoid delays
• Avoid pitfall of declaring as scrap (7204); must prove virgin production origin
Related Products under HTS 7202.21.10.00
FeSiCa 75 Alloy with 5% Calcium
Ferrosilicon alloy containing 75% silicon, over 5% calcium by weight, used primarily as a deoxidizer and inoculant in steel production. Classified under HTS 7202.21.10.00 due to exceeding 55% silicon, 55-80% silicon range, and more than 3% calcium content per chapter note definitions. Supplied in standard 1 MT jumbo bags for foundry applications.
Calcium-Rich FeSi 70/4 Alloy
FeSiCa alloy with 70% silicon and 4% calcium, designed for nodular iron production as a nodularizer. Meets HTS 7202.21.10.00 criteria with silicon between 55-80% and calcium >3% by weight. Typically packaged in 25kg bags or 1MT supersacks for metallurgical applications.
High-Calcium FeSi 78/3.5 Alloy
Premium ferrosilicon alloy at 78% silicon and 3.5% calcium, used for deoxidation in specialty steel grades. Precisely matches HTS 7202.21.10.00 with 55-80% Si and >3% Ca composition. Supplied in bulk or 50kg drums for steel mill consumption.
FeSiCa Deoxidizer 72/4.2
Industrial-grade FeSiCa 72% silicon, 4.2% calcium deoxidizer for continuous casting operations. Classified HTS 7202.21.10.00 due to meeting exact ferrosilicon composition thresholds: >55% Si, 55-80% range, >3% Ca. Packaged in 1-ton flexible intermediate bulk containers.
Nodulizing FeSiCa 68/5 Alloy
Specialty nodulizing ferrosilicon-calcium alloy with 68% Si and 5% Ca for spheroidal graphite iron production. HTS 7202.21.10.00 applies as it contains 55-80% silicon and >3% calcium by weight. Comes in hermetically sealed 25kg PVC bags.