8103.91.00.00 - Crucibles

This classification covers crucibles specifically made of tantalum. Crucibles are vessels used for holding substances during high-temperature processes, such as melting or calcining. Given their material composition, these tantalum crucibles are typically employed in highly demanding applications where extreme heat resistance, chemical inertness, and non-reactivity are paramount, often found in specialized metallurgical, chemical, or scientific research environments.

This heading, 8103.91.00.00, is distinct from its sibling category, 8103.99.00.00, which is designated for "Other" tantalum articles. While both fall under the broader classification of "Other" tantalum-based products, this specific subheading is exclusively for crucibles. Therefore, if an article is a crucible and made of tantalum, it will be classified here; otherwise, it would likely fall under the residual "Other" category.

As a leaf node, this classification does not have further subdivisions. This means that any product meeting the criteria of being a crucible manufactured from tantalum will be classified directly under this code, without needing to consider more specific sub-classifications. The focus remains on the material (tantalum) and the specific function and form of the article (crucible).