8108.90.60.31 - Other bars, rods, profiles and wire

HTS code 8108.90.60.31 specifically encompasses bars, rods, profiles, and wire of titanium not already classified under more specific subheadings within Chapter 8108. This category captures semi-finished or finished titanium products that are typically long and relatively thin, manufactured through extrusion, rolling, drawing, or other metal-forming processes. The "bars" and "rods" generally refer to solid cross-sections with a uniform shape, while "profiles" are manufactured with specific cross-sectional shapes for particular applications. "Wire" signifies a round cross-section, often drawn to a fine diameter.

This classification differentiates itself from its siblings by its exclusion of other specific forms of titanium. Unlike 8108.90.60.20 (blooms, sheet bars, and slabs) which are larger, less refined intermediate forms, or 8108.90.60.45 (plates, sheets, strips, and foil) which are flat, thin products, and 8108.90.60.60 (tubes and pipes) which are hollow cylindrical forms, this category focuses on solid, linear or shaped cross-sections. The sibling 8108.90.60.75 covers "Other," indicating that any titanium articles not fitting within the specific descriptions of bars, rods, profiles, wire, blooms, sheet bars, slabs, plates, sheets, strips, foil, tubes, or pipes would fall under that residual category.

As HTS code 8108.90.60.31 is a leaf node, it does not have further subcategories. Therefore, classification into this specific code relies on accurately identifying the product as a bar, rod, profile, or wire of titanium, and ensuring it does not meet the descriptive criteria of any other more precisely defined subheading at this level or within the broader chapter. Classification hinges on the physical form and the primary manufacturing process of the titanium article.