8105.20.90.00 - Other

This HTS category, 8105.20.90.00, encompasses "Other" cobalt mattes and other intermediate products of cobalt metallurgy. This designation is reserved for those cobalt-containing intermediate materials that do not fall under the more specific categories within Chapter 81, specifically those related to unwrought cobalt or cobalt powders. It serves as a residual category for these less refined forms of cobalt derived from metallurgical processes.

Unlike the sibling category for "Unwrought cobalt," which refers to the refined, cast, or extruded forms of pure cobalt, this category captures the less processed outputs of cobalt smelting and refining. These may include slags, residues, or other complex mixtures containing cobalt that have undergone initial metallurgical treatment but are not yet in a finished, marketable form for direct use as pure metal. The key differentiator lies in the degree of refinement and the absence of a clearly defined "unwrought" form.

As this is a leaf node within the HTS structure, there are no further subcategories. Therefore, classification within 8105.20.90.00 relies on carefully examining the composition and stage of processing of the cobalt-containing material. Importers and exporters should refer to specific technical descriptions, assay reports, and process flow charts to ensure that such intermediate products are accurately classified here when they do not fit into more specifically defined categories of cobalt-based materials.