Cast iron is a group of iron-carbon alloys containing over 2% carbon content with Carbon (C) and silicon (Si) as the main alloying elements. The melting temperatures of most cast irons are typically lower than the melting point of pure iron.

With its low melting point, good fluidity, castability, excellent machinability, resistance to deformation and wear resistance, cast irons have a wide range of applications such as pipes, machines and automotive industry parts, cylinder heads, cylinder blocks, and gearboxes. It is resistant to destruction and weakening by oxidation (rust).

Alro offers three grades of cast iron plates: Dura-Bar 65-45-12 ductile iron contains graphite and ferrite with small amounts of pearlite to give excellent machinability with good surface finishes and optimal impact strength. Dura-Bar 80-55-06 ductile iron combines graphite with ferrite and pearlite to provide high wear resistance and strength. This material is readily machinable with good surface finishes. Dura-Bar G2 contains pearlitic gray iron and graphite for optimal strength, wear, and hardness. It is highly resistant to wear and response to heat treatment.