8101.99 - Other:

This HTS category, 8101.99, encompasses tungsten (wolfram) and articles made from it, excluding waste and scrap, and specifically excluding unwrought forms obtained by sintering, and wire. It acts as a residual category for manufactured or processed tungsten articles not otherwise specified. This includes finished or semi-finished goods that do not fall into the more granular descriptions of tungsten products.

The primary distinction from its siblings lies in the form and processing of the material. Unlike the unwrought bars and rods obtained by sintering under 8101.94, or the wire classified under 8101.96, this category deals with more advanced or specific fabrications of tungsten. It also differentiates itself from 8101.97, which is strictly for waste and scrap materials.

The subcategories within 8101.99 further refine the classification of these remaining tungsten articles. 8101.99.10.00 specifically covers bars and rods that are not produced by simple sintering, along with profiles, plates, sheets, strip, and foil, indicating a focus on semi-finished mill products. The broader residual category, 8101.99.80.00, then accounts for all other manufactured tungsten articles not otherwise classified, such as finished components or specialized items.