Calcium Silicon 24/70 Deoxidizer Lump from Mexico
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.
Duty Rate — Mexico → United States
15%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Lump size specification (10-100mm typical) should be documented; fines under 10mm may face different handling requirements
• Include safety data sheets noting pyrophoric properties when wet; pitfall is incorrect hazmat class (often UN1405)
• Confirm no cored wire format, as that changes classification to 8311.20