8108 - Titanium and articles thereof, including waste and scrap:

Category 8108 encompasses titanium and articles manufactured from this base metal, including waste and scrap. This broad classification covers a wide range of titanium products, from raw materials to finished goods. It is important to note that this chapter, and specifically this heading, deals exclusively with titanium, distinguishing it from other base metals covered in Chapter 81 or articles made from different metal compositions.

Within the HTS structure, category 8108 is found under Section XV, which pertains to base metals and their articles. This positioning signifies that the primary classifying characteristic is the material composition of the goods. While many other categories at the root level deal with live animals or agricultural products, 8108 is firmly situated within the realm of metallic goods.

This category is further subdivided to provide more granular classification based on the form and condition of the titanium. Subheading 8108.20.00 specifically covers unwrought titanium and titanium powders, representing the rawest forms of the metal. Waste and scrap of titanium are addressed separately under 8108.30.00.00, recognizing the distinct trade and processing considerations for these materials. The "Other" subheading, 8108.90, serves as a residual category for all other titanium articles not specifically enumerated in the preceding subheadings, such as bars, rods, wire, plates, sheets, tubes, pipes, and fabricated articles thereof.