Wrought iron
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Wrought iron is an iron alloy with a very low carbon content in contrast to that of cast iron, or 0.25% for low-carbon "mild" steel. Wrought iron is manufactured by heating and melting high-carbon cas
Schematic drawing of a puddling furnace
The microstructure of wrought iron, showing dark slag inclusions in ferrite
Eiffel tower from below
Balcon d'un immeuble parisien
Pig iron
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Pig iron is an intermediate good used by the iron industry in the production of steel. It is developed by smelting iron ore in a blast furnace. Pig iron has a high carbon content, typically 3.8–4.7%,
Wrought iron
…by a wide variety of terms according to its form, origin, or quality. While the bloomery process produced wrought iron directly from ore, cast iron or pig iron were the starting materials used in the finery forge and puddling furnace. Pig iron and cast iron have higher carbon content than wrought iron, but…
Pig iron used to manufacture ductile iron
Casting pig iron at the Iroquois smelter in Chicago between 1890 and 1901
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