7202.21.50.00 - Other

This HTS category, 7202.21.50.00, classifies "Other" ferrosilicon with a silicon content exceeding 55 percent by weight, but specifically within the range of more than 55 percent and not more than 80 percent of silicon. Ferrosilicon is an alloy primarily composed of iron and silicon, widely used in the steelmaking industry as a deoxidizer, alloying agent, and inoculant. This subcategory captures specific types of ferrosilicon within this silicon concentration bracket that do not fall under other more specific subdivisions.

To understand its place, consider its sibling category, 7202.21.10.00. The sibling is distinguished by its additional characteristic of containing by weight more than 3 percent of calcium. Therefore, 7202.21.50.00 serves as a residual category for ferrosilicon meeting the silicon percentage criteria (55% to 80%) but lacking the specific calcium content of its sibling. This ensures accurate classification based on both primary silicon concentration and other significant alloying elements.

As this is a leaf node in the HTS classification structure, there are no further subcategories to introduce. The classification is finalized at this level based on the defined silicon content range and the exclusion of specific alloying elements like calcium, as outlined in the sibling categories. Classification within this code hinges on precise chemical analysis of the ferrosilicon alloy.