
Ferroalloy refers to various alloys of iron with a high proportion of one or more other elements such as manganese, aluminium, or silicon. They are used in the production of steels and alloys. The alloy impart distinctive qualities to steel and cast iron or serve important functions during production and are, therefore, closely associated with the...
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an alloy of iron (less than 50 percent) and one or more other metals, important as a source of various metallic elements in the production of alloy ... [8 related articles]
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http://www.britannica.com/eb/a-z/f/19

ferroalloy 1. An iron alloy, containing a large proportion of one or more other elements, which is added to molten metal during iron and steel production to give the required composition. 2. Any of various alloys of iron and one or more other elements; such as, manganese or silicon, used as a raw material in the production of steel.
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A metal product commonly used as a raw material feed in steelmaking, usually containing iron and other metals to aid various stages of the steelmaking process such as deoxidation, desulfurization and adding strength. Examples
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Metal products such as ferrochrome, ferromanganese, and ferrosilicon that are commonly used as raw materials to aid various stages in stainless steel making.
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Alloy of iron with high proportion of an element such as nickel, chromium, molybdenum, vanadium, manganese etc that used in the production of steel
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https://www.steelonthenet.com/files/glossary-5.html
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