7225.30.11 - Of tool steel

This HTS category, 7225.30.11, specifically covers flat-rolled products of other alloy steel, measuring 600 mm or more in width, which have undergone not further processing than hot-rolling and are presented in coils. Crucially, this subdivision is limited to those products that are made of tool steel. Tool steel is a category of alloy steel recognized for its exceptional hardness, wear resistance, and ability to retain its shape at elevated temperatures, making it suitable for manufacturing tools and dies.

Distinguishing this category from its sibling, 7225.30.30, is the explicit requirement for the material to be tool steel. The sibling category, "Other," would encompass hot-rolled, other alloy steel flat-rolled products of the specified dimensions and form factors that *do not* meet the criteria for tool steel. Therefore, the primary differentiating factor is the specific metallurgical composition and intended application inherent in the classification of tool steel.

Within this tool steel classification, two subcategories exist to further refine the classification. These are 7225.30.11.10 for "Of high-speed steel" and 7225.30.11.80 for "Other." High-speed steel represents a specific subset of tool steel known for its ability to maintain hardness even when subjected to high speeds and temperatures during machining operations. The "Other" subcategory then captures any remaining tool steels that do not fall under the high-speed steel designation, allowing for precise categorization based on the specific type of tool steel utilized.