What Is Cast Iron? | Metal Glossary | Industrial Metal Supply
Cast iron is an iron based alloy with a relatively high carbon content, typically around 2 to 4 percent, which makes it ideal for being melted and poured into molds. This casting process allows complex shapes to be produced efficiently, and cast iron is known for good compressive strength, vibration damping, and wear resistance. Common types include gray cast iron, ductile iron, and white cast iron, each with different properties based on how the carbon is present in the metal.

Cast iron is used in items like engine blocks, machine bases, manhole covers, pipes, cookware, and industrial components. Compared with low carbon steel, it is generally more brittle and less tolerant of impact or bending, but it machines well in many grades and performs well in applications where stiffness and durability are needed. Like other iron based materials, cast iron can rust if left unprotected in damp conditions.

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