2620.30.00 - Containing mainly copper

This HTS category, 2620.30.00, specifically classifies slag, ash, and residues, other than those originating from the manufacture of iron or steel, which contain primarily copper and its compounds. These materials are often byproducts of industrial processes, such as smelting or refining, where copper is a significant component. The "mainly copper" designation is crucial for accurate classification, indicating that copper is the principal metal present by weight or value.

This classification is distinguished from its siblings by the dominant metallic content. For instance, while other categories under 2620.30 address residues primarily containing zinc, lead, or aluminum, this heading is reserved for those where copper is the predominant element. Similarly, it differs from 2620.60, which covers residues containing specific hazardous elements like arsenic or mercury, regardless of their primary metal content.

The subcategories under 2620.30.00 provide further specificity based on other metals that may be present in conjunction with the primary copper content. For example, 2620.30.00.10 signifies a residue where copper is the main component, while 2620.30.00.20, 2620.30.00.30, 2620.30.00.40, and 2620.30.00.50 distinguish residues based on the presence of significant lead, zinc, silver, or gold content, respectively, in addition to the primary copper. This detailed breakdown aids in precise tariff determination for varying compositions.