High Chrome Cast Iron Grinding Balls from Canada
These are cast iron grinding balls with high chromium content, typically 10-18%, used in ball mills for grinding ores and minerals. They fall under HTS 7325.91.00.00 as cast articles of iron or steel specifically designed as grinding balls for mills. Their hardness and wear resistance make them ideal for mineral processing applications.
Duty Rate — Canada → United States
52.9%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) of U.S. note 16 to this subchapter
9903.05.900%Articles of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Verify chemical composition certificates to confirm cast iron/steel content and avoid misclassification under Chapter 72 unwrought metals
• Include mill test reports showing hardness (e.g
• HRC 58-65) and size specs to prove grinding ball function during customs review