7228.50.10 - Of tool steel (other than high-speed steel)

This HTS category, 7228.50.10, specifically classifies bars and rods of alloy steel that have undergone cold-forming or cold-finishing processes and are made from tool steel, excluding high-speed steel. These materials are characterized by their enhanced properties, such as hardness, wear resistance, and toughness, making them suitable for specialized applications where precision and durability are paramount. Examples include cold-finished bars and rods destined for the manufacture of cutting tools, dies, punches, and other precision instruments.

Distinguishing this category from its sibling, 7228.50.50 ("Other"), is crucial. While both fall under "Other bars and rods, not further worked than cold-formed or cold-finished," the distinction lies in the material composition. 7228.50.10 is restricted to alloy steels specifically designated as tool steel (excluding high-speed steel), whereas 7228.50.50 covers all other alloy steels that do not meet the criteria for tool steel. This ensures that the unique properties and intended uses of tool steel products are accurately classified.

The subcategories within 7228.50.10 provide further refinement based on the specific type of tool steel. The primary subdivision, 7228.50.10.10, identifies bars and rods made of ball-bearing steel. The remaining items within this category are then grouped as "Other," encompassing a variety of tool steels that are not specifically ball-bearing steel, but still meet the criteria of being cold-formed or cold-finished alloy steel. This hierarchical structure allows for granular classification based on the precise composition and application of the tool steel.