7604.29.10 - Other profiles

This category encompasses aluminum profiles that do not fall under the specific descriptions of bars or rods, and are not manufactured from pure aluminum. Profiles are generally characterized by their specific cross-sectional shapes, often designed for particular structural or functional purposes beyond simple straight lengths. This includes items like extruded or rolled shapes such as angles, channels, T-sections, and hollow sections, which have a continuous cross-sectional profile along their length.

The distinction from sibling categories lies in the fundamental shape and form of the aluminum. While "bars and rods" typically refer to simpler, more uniform cross-sections (often round, square, or rectangular with specific dimensional tolerances), "profiles" are usually more complex or specialized in their geometric configuration. This classification is reserved for those aluminum articles whose shape is intentionally formed to serve a specific application, such as in window frames, architectural elements, or structural components.

Within this category, further subdivisions are necessary to account for specific types of aluminum alloys. The subcategories differentiate between heat-treatable industrial alloys, which possess enhanced mechanical properties after specific thermal treatments, and other, less specialized aluminum alloys. This distinction is crucial for statistical tracking and potential duty rate variations, as different alloy compositions can significantly impact the material's performance and intended use.