7224.90.00.15 - Having a width less than four times the thickness

This HTS category, 7224.90.00.15, covers semi-finished products of other alloy steel that have a rectangular (including square) cross-section and a specific dimensional characteristic: their width is less than four times their thickness. These products are derived from the processing of ingots or other primary forms of alloy steel that do not fall under more specific alloy categories within Chapter 72. The "other alloy steel" designation implies that these steels contain elements beyond iron and carbon, such as chromium, nickel, molybdenum, vanadium, etc., but are not classified as tool steel under 7224.90.00.05.

This classification is specifically distinguished from its sibling category, 7224.90.00.25, which covers similar semi-finished products of other alloy steel but with a width that is at least four times the thickness. Therefore, the critical differentiating factor for classification into 7224.90.00.15 is the precise ratio of the width to the thickness of the rectangular cross-section.

As this is a leaf node in the HTS classification, there are no further subcategories to introduce. The classification is determined solely by the material being "other alloy steel" (not tool steel), its semi-finished form, its rectangular cross-section, and the specific width-to-thickness ratio. Practical examples within this category might include blooms, billets, or slabs of alloy steel intended for further processing, where the cross-sectional dimensions meet the stated criteria.