7227.90.10 - Not tempered, not treated, and not partly manufactured

This HTS category, 7227.90.10, specifically covers bars and rods of other alloy steel that have been hot-rolled into irregularly wound coils. Crucially, these products are not tempered, not otherwise treated (such as by surface finishing beyond basic mill processing), and are not considered partly manufactured. The "other alloy steel" designation means the steel's alloy content does not fall into specific, more narrowly defined categories within Chapter 72, such as high-speed steel or stainless steel, when considering the composition of the alloy.

Distinguishing this classification from its sibling, 7227.90.20, is essential. While 7227.90.10 enumerates the specifically defined "Other" alloy steels that are not tempered or treated, 7227.90.20 would encompass any remaining "other" alloy steels in the same form that are not explicitly covered by 7227.90.10. The primary differentiator lies in the absence of specific tempering or treatment processes for the goods classified under 7227.90.10.

Within this category, further subdivisions exist to refine the classification based on the specific type of steel. The subcategories, 7227.90.10.30 and 7227.90.10.60, allow for a more granular breakdown. 7227.90.10.30 pertains to bars and rods of ball-bearing steel, a specific alloy known for its wear resistance and use in rolling elements. The remaining "other" alloy steels, not specifically ball-bearing steel, that meet the general criteria of this HTS code would fall under 7227.90.10.60.