Silicomanganese

For purposes of these orders, the products covered are all forms, sizes and compositions of silicomanganese, except low-carbon silicomanganese, including silicomanganese briquettes, fines and slag. Silicomanganese is a ferroalloy composed principally of manganese, silicon and iron, and normally contains much smaller proportions of minor elements, such as carbon, phosphorous and sulfur. Silicomanganese is sometimes referred to as ferrosilicon manganese. Silicomanganese is used primarily in steel production as a source of both silicon and manganese. Silicomanganese generally contains by weight not less than 4 percent iron, more than 30 percent manganese, more than 8 percent silicon and not more than 3 percent phosphorous. Silicomanganese is properly classifiable under subheading 7202.30.0000 of the Harmonized Tariff Schedule of the United States (HTSUS). Some silicomanganese may also be classified under HTSUS subheading 7202.99.5040. This scope covers all silicomanganese, regardless of its tariff classification. Although the HTSUS subheadings are provided for convenience and U.S. Customs Service (Customs) purposes, our written description of the scope remains dispositive. The low-carbon silicomanganese excluded from this scope is a ferroalloy with the following chemical specifications: minimum 55 percent manganese, minimum 27 percent silicon, minimum 4 percent iron, maximum 0.10 percent phosphorus, maximum 0.10 percent carbon and maximum 0.05 percent sulfur. Low-carbon silicomanganese is used in the manufacture of stainless steel and special carbon steel grades, such as motor lamination grade steel, requiring a very low carbon content. It is sometimes referred to as ferromanganese-silicon. Low-carbon silicomanganese is classifiable under HTSUS subheading 7202.99.5040.