2620.19.60.10 - Copper content

This classification covers slag, ash, and residues, other than those derived from the manufacture of iron or steel, which contain arsenic, metals, or their compounds, and specifically, have a significant copper content. These materials are typically by-products of various industrial processes, such as smelting, refining, or manufacturing, where copper is present in the raw materials or as part of the production stream. The classification hinges on the presence and predominance of copper as the defining metallic constituent within these waste or residue materials.

This category is distinguished from its siblings by the specific metallic element that is the primary constituent. While other categories at this level address residues with lead, zinc, silver, or gold content, this sub-heading is reserved for those where copper is the principal metallic component being recovered or identified for classification purposes. The classification is not based on the mere presence of copper, but on its characterization as the dominant or most significant metallic content within the slag, ash, or residue.

As a leaf node, this classification does not have further subdivisions. Therefore, the practical application of this classification relies on the clear identification and quantification of copper within the slag, ash, or residue. Importers and exporters must be able to demonstrate through analysis or process documentation that copper is the defining metal, differentiating it from other categories that focus on different primary metallic constituents. This ensures accurate tariff assessment based on the material's specific composition.