8109.39.00.00 - Other

This HTS category, 8109.39.00.00, encompasses waste and scrap of zirconium that does not meet the specific compositional criteria of its sibling category. Specifically, it covers zirconium waste and scrap containing hafnium in proportions greater than 1 part hafnium to 500 parts zirconium by weight. This material would typically include discarded or used forms of zirconium alloys, manufacturing scrap, or end-of-life products where the zirconium content is the primary constituent.

The key differentiator for this classification lies in its hafnium content. Whereas 8109.31.00.00 is reserved for zirconium waste and scrap with a very low hafnium concentration, this category applies when the hafnium is present in a more significant ratio. This distinction is crucial for accurate classification as hafnium often occurs naturally alongside zirconium and can impact its properties and end-use applications.

As this is a leaf node, there are no further subdivisions within this category. Therefore, the classification decision rests solely on the quantitative analysis of hafnium content relative to zirconium. Importers and exporters should ensure that documentation accurately reflects the hafnium-to-zirconium ratio to facilitate correct customs processing.