8109.29.00.00 - Other

This HTS classification, 8109.29.00.00, covers unwrought zirconium and zirconium powders that do not meet the specific criteria for inclusion in sibling category 8109.21.00.00. Essentially, this "Other" category serves as a catch-all for zirconium in its primary, unworked forms, including ingots, pigs, blocks, and granular or powdered materials, when they are not characterized by a precise hafnium content.

The key distinguishing factor from the sibling category 8109.21.00.00 lies in the hafnium content. While 8109.21.00.00 specifically applies to unwrought zirconium and powders containing less than 1 part hafnium to 500 parts zirconium by weight, this classification, 8109.29.00.00, encompasses all other unwrought zirconium and zirconium powders. This includes materials where the hafnium concentration is not specified or exceeds the threshold defined in the sibling category.

As this is a leaf node in the HTS classification, there are no further subcategories to detail. The classification is directly assigned based on the physical form of the zirconium (unwrought or powder) and its hafnium content, or lack thereof, relative to the specific quantitative requirement outlined in the preceding sibling category.