High-Purity Calcium Silicon 28/58
Premium grade calcium silicon with 28% Ca and 58% Si, low impurities (Al<1.5%, C<0.2%), used in high-quality steel production like automotive sheet. HTS 7202.99.20.00 covers this essential steelmaking alloy for inclusion control.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as ferrosilicon with calcium addition
Ferrosilicon containing ≤3% calcium by weight falls under 7202.99.10, differentiated by calcium threshold.
If when blended with other metallurgical additives
Mixtures of ferroalloys for specific foundry applications are prepared chemicals under Chapter 38.
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Import Tips & Compliance
• Require spectrographic analysis certificates; high-purity grades need verification to prevent duty disputes
• Bag labeling must specify alloy type and size for customs compliance
Related Products under HTS 7202.99.20.00
Calcium Silicon 30/65 Ferroalloy
Calcium silicon 30/65 is a ferroalloy containing approximately 30% calcium and 65% silicon, used primarily as a deoxidizer and desulfurizer in steel production. It falls under HTS 7202.99.20.00 as a specific type of calcium silicon ferroalloy not elsewhere specified in heading 7202. This master alloy helps control non-metallic inclusions in molten steel.
Calcium Silicon 24/70 Deoxidizer Lump
This ferroalloy grade with 24% calcium and 70% silicon is supplied in lump form (10-50mm) for use in secondary steel refining. Classified under HTS 7202.99.20.00 as calcium silicon, it provides both deoxidation and desulfurization functions in ladle metallurgy.
Calcium Silicon Cored Wire Filler
Bulk calcium silicon powder used as filler material for manufacturing cored wires in steel treatment stations. While the final cored wire is elsewhere classified, the pure calcium silicon filler remains under HTS 7202.99.20.00 as the base ferroalloy.
Steelmaking Calcium Silicon Lumps 10-50mm
Standard 10-50mm lumps of calcium silicon ferroalloy for direct addition to steel ladles. Essential for sulfur removal in stainless and specialty steel production, properly classified under HTS 7202.99.20.00.
Low-Aluminum Calcium Silicon 25/65
Specialty grade with reduced aluminum (<1%) for electrical steel production where Al inclusions must be minimized. Falls squarely under HTS 7202.99.20.00 as calcium silicon ferroalloy.
Industrial Calcium Silicon 30/60 Briquettes
Calcium silicon 30/60 formed into briquettes (50x50mm) for easier handling and reduced dust in steel plants. This physical form of the ferroalloy is still classified under HTS 7202.99.20.00 as calcium silicon, not further worked beyond simple compaction.