Ferro-alloys; ferro-silicon, containing by weight more than 55% of silicon

HS v2017 Code: 720221

About ferro-alloys; ferro-silicon, containing by weight more than 55% of silicon

HS code 720221 covers ferro-silicon, a critical ferro-alloy used in the production of steel and cast iron. Ferro-silicon is an essential ingredient in the steelmaking process, enhancing the strength, ductility, and corrosion resistance of the final product. As a key component in the broader steel industry, this ferro-alloy plays a vital role in supporting the construction, automotive, and manufacturing sectors, which are the backbone of many national economies.

Production process

Ferro-silicon is primarily produced through the reduction of silicon dioxide (SiO2) in an electric arc furnace. The process involves combining silica (sand) with iron ore and a carbon-rich reducing agent, such as coal or coke. The intense heat generated by the electric arc furnace causes the reduction of the silicon dioxide, resulting in the formation of molten ferro-silicon. The molten alloy is then cast into ingots or crushed into smaller pieces for further processing and distribution.

Production inputs

The main inputs required for the production of ferro-silicon under HS code 720221 include silica (sand), iron ore, and a carbon-rich reducing agent, such as coal or coke. Additionally, the process requires significant amounts of electricity to power the electric arc furnaces used in the production. Specialized equipment, such as furnaces, casting molds, and crushing machinery, are also essential for the efficient manufacture of this ferro-alloy.

Production outputs

The primary output of HS code 720221 is ferro-silicon, a ferro-alloy containing more than 55% silicon by weight. This material is then consumed by various industries, particularly the 720810 Steel industry, where it is used to enhance the properties of steel and cast iron. Other industries that may utilize ferro-silicon include the 848210 Machinery industry, the 870323 Automotive industry, and the 940600 Construction industry.

Revisions to 720221

Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 720221. The most recent 1 version of this code (720221) is in the HS v2022 system:

This page shows a legacy version of code 720221 ( HS v2017).

Family tree for ferro-alloys; ferro-silicon, containing by weight more than 55% of silicon

    graph LR
    A["<a href='/classifications/hs/v2017/72'>72: Iron and steel</a>"]
A --> B["<a href='/classifications/hs/v2017/7202'>7202: Ferro-alloys</a>"]
B --> C["<a href='/classifications/hs/v2017/720221'>720221: Ferro-alloys; ferro-silicon, containing by weight more than 55% of silicon</a>"]

    B --> D["<a href='/classifications/hs/v2017/720211'>720211: Ferro-alloys; ferro-manganese, containing by weight more than 2% of carbon</a>"]
B --> E["<a href='/classifications/hs/v2017/720219'>720219: Ferro-alloys; ferro-manganese, containing by weight 2% or less of carbon</a>"]
B --> F["<a href='/classifications/hs/v2017/720229'>720229: Ferro-alloys; ferro-silicon, containing by weight 55% or less of silicon</a>"]
B --> G["<a href='/classifications/hs/v2017/720230'>720230: Ferro-alloys; ferro-silico-manganese</a>"]
B --> H["<a href='/classifications/hs/v2017/720241'>720241: Ferro-alloys; ferro-chromium, containing by weight more than 4% of carbon</a>"]
B --> I["<a href='/classifications/hs/v2017/720249'>720249: Ferro-alloys; ferro-chromium, containing by weight 4% or less of carbon</a>"]
B --> J["<a href='/classifications/hs/v2017/720250'>720250: Ferro-alloys; ferro-silico-chromium</a>"]
B --> K["<a href='/classifications/hs/v2017/720260'>720260: Ferro-alloys; ferro-nickel</a>"]
B --> L["<a href='/classifications/hs/v2017/720270'>720270: Ferro-alloys; ferro-molybdenum</a>"]
B --> M["<a href='/classifications/hs/v2017/720280'>720280: Ferro-alloys; ferro-tungsten and ferro-silico-tungsten</a>"]
B --> N["<a href='/classifications/hs/v2017/720291'>720291: Ferro-alloys; ferro-titanium and ferro-silico-titanium</a>"]
B --> O["<a href='/classifications/hs/v2017/720292'>720292: Ferro-alloys; ferro-vanadium</a>"]
B --> P["<a href='/classifications/hs/v2017/720293'>720293: Ferro-alloys; ferro-niobium</a>"]
B --> Q["<a href='/classifications/hs/v2017/720299'>720299: Ferro-alloys; n.e.c. in heading no. 7202</a>"]

    

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