7202.93 - Ferroniobium:

This HTS category, 7202.93, specifically addresses ferroniobium, a ferroalloy primarily composed of iron and niobium. Ferroniobium is a crucial additive in the production of various steel alloys, imparting desirable properties such as increased strength, toughness, and resistance to corrosion. Its classification within Section XV and Chapter 72 signifies its metallic nature and its role as an iron and steel product.

Distinguishing this category from its siblings, 7202.91 (ferrotitanium and ferrosilicon titanium) and 7202.92 (ferrovanadium), is the key elemental composition. While all are ferroalloys used in steelmaking, 7202.93 is exclusively for those where niobium is the primary alloying element alongside iron. The sibling category 7202.99.00.00, "Other," would encompass ferroalloys not specifically listed in the preceding subheadings of 7202.9.

Subdivision within 7202.93 is based on the chemical composition of the ferroniobium. The subcategories 7202.93.40.00 and 7202.93.80.00 differentiate based on the percentage of phosphorus, sulfur, or silicon content. This distinction is important for customs purposes as these trace elements can influence the properties and intended applications of the ferroniobium, and thus its precise classification.