Black metal

 Black metal

Refers to the alloy of iron and iron. Such as steel, pig iron, ferroalloy, cast iron, etc. Both steel and pig iron are alloys based on iron with carbon as the main additive element, collectively referred to as iron-carbon alloys. Pig iron refers to the product made by smelting iron ore in a blast furnace, which is mainly used for steelmaking and casting.

Smelting cast pig iron in an iron melting furnace to obtain cast iron (liquid, iron-carbon alloy with a carbon content greater than 2.11%), and casting the liquid cast iron into castings, this type of cast iron is called cast iron.

Ferroalloy is an alloy composed of iron, silicon, manganese, chromium, titanium and other elements. Ferroalloy is one of the raw materials for steelmaking. It is used as a deoxidizer and alloy element additive for steel during steelmaking.

Iron-carbon alloys with a carbon content of less than 2.11% are called steel, and steel is obtained by putting pig iron for steelmaking into a steelmaking furnace and smelting it according to a certain process. Steel products include steel ingots, continuous casting slabs and direct casting into various steel castings. Generally speaking, steel generally refers to steel rolled into various steel products.

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