FeSiCa 65/6 Nodularizer Alloy from Mexico
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.
Duty Rate — Mexico → United States
11.1%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• 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