Converter Blow Matte from Mexico
Matte generated during final converting blow in Peirce-Smith converters, containing 72-78% copper. Falls under HTS 7401.00.00.00 as standard copper smelting intermediate product.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Document converter campaign length and slag losses for accurate yield verification
• Test for arsenic content from certain ore types triggering hazmat rules
• Avoid confusion with anode furnace speiss (arsenic-copper alloy)