|This article is about an older version of DF.
Pig iron is a high-carbon alloy of iron, an intermediate component used in the production of steel. Pig iron cannot be forged into any items, although it can be used to construct any building that can be made out of metal bars, such as bridges or roads.
It is formed in a smelter by the following process:
At a magma smelter, only one charcoal/coke is needed.