7226.91.05.00 - Of chipper knife steel

This HTS classification, 7226.91.05.00, specifically covers flat-rolled products of other alloy steel, less than 600 mm in width, which have been further processed beyond hot-rolling. The defining characteristic of this subcategory is its designation as "chipper knife steel." This implies the steel possesses specific metallurgical properties optimized for the manufacturing of blades used in chipper machines, such as those found in forestry or agricultural applications. These properties typically include high toughness, wear resistance, and the ability to maintain a sharp edge under strenuous cutting conditions.

Distinguishing this category from its sibling "Other" at the same level requires an understanding of the intended application. While "Other" would encompass flat-rolled alloy steel products that do not meet the specific criteria of chipper knife steel, this category is narrowly defined by the metallurgical composition and intended use for producing chipper blades. The parent categories emphasize the form (flat-rolled, width less than 600 mm), the material (other alloy steel), and the initial processing (not further worked than hot-rolled), with this subcategory adding the crucial functional designation.

As this HTS code represents a leaf node, there are no further subcategories to introduce. The classification is at its most specific, focusing entirely on the application of the steel as chipper knife steel. Therefore, the primary classification criteria revolve around verifying that the material's properties and intended end-use align with the requirements for producing chipper knives, distinguishing it from other alloy steels that may be used in less specialized applications or for different types of tools.