7901.12.10.00 - Casting-grade zinc

This HTS classification, 7901.12.10.00, specifically covers "casting-grade zinc" when it is in an unwrought form and contains by weight less than 99.99 percent of zinc. Casting-grade zinc is characterized by its suitability for use in various casting processes due to its specific alloy composition and purity levels, designed to optimize fluidity, shrinkage, and mechanical properties during the casting of parts and components. This designation implies that the zinc has been processed and refined to meet the stringent requirements of foundry applications.

This category is distinguished from its sibling category, 7901.12.50.00, which covers "other" unwrought zinc that contains by weight less than 99.99 percent of zinc. While both fall under the broader umbrella of zinc not alloyed but below 99.99% purity, 7901.12.10.00 is reserved for zinc specifically intended and identified for casting purposes. The "other" category would encompass any unwrought zinc with less than 99.99% zinc content that is not specifically designated or recognized as casting-grade.

As this is a leaf node in the HTS classification system, there are no further subcategories for this specific code. Therefore, the classification is definitive for unwrought zinc that meets the purity threshold (less than 99.99% zinc) and is specifically intended for use in casting operations. Importers and exporters should ensure that documentation accurately reflects the intended use and grade of the zinc to ensure correct classification.