Steel alloys are made by melting and sintering two or more metals in a levitation furnace. The molten mixture is then cooled and solidified as an alloy to form a structural material. Steel is made of iron and carbon, found in the earth's crust
The basic elements of steel are Fe, C and Si. These elements combine to form ferrite (Fe3C), austenite (FeSi) and cementite (Fe3C). More complex forms are formed through the addition of other elements, such as Mn, Cr and Cu to form carbides (CoC) and carbides combined with silicon carbide (SiC).
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