7225.30.51 - Of tool steel

This HTS category, 7225.30.51, specifically classifies flat-rolled products of other alloy steel, with a width of 600 mm or more, that have not been further worked beyond hot-rolling and are supplied in coils. Crucially, these products possess a thickness of less than 4.75 mm and are specifically designated as being manufactured from tool steel. Tool steel is characterized by its hardness, wear resistance, and toughness, making it suitable for a variety of industrial applications.

This classification is distinguished from its sibling category, 7225.30.70, which covers "Other" flat-rolled products meeting the general criteria but not specifically made of tool steel. Therefore, the defining characteristic for this node is the material composition – its designation as tool steel.

Within this category, further subdivisions exist to refine the classification based on the specific type of tool steel. The subcategories 7225.30.51.10 and 7225.30.51.80 differentiate between high-speed steel and other types of tool steel, respectively. This allows for more granular tracking and statistical reporting of these specialized steel products based on their precise metallurgical properties and intended applications.