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Lamrtine is correct. I should have responded when the definition
of "Pig" iron was given - It was totaly incorrect. Pig Iron is
the crudest form of iron. It is the product produced in the
reduction of iron ore in a blast furnace with coke and a
limestone flux. Some of this iron may be poured into relatively
small molds as ingots called "pigs" These pigs are used to supply
iron foundries and are the material called cast iron. Most of the
iron producty from a blast furnace is removed as molten metal in
a large ladle or special rail car and transered to a secondary
furnace for carbon reduction further refining and alloying. This
furnace at one time would have been a Bessemer converter, an Open
hearth furnace, or Today a BOF (basic oxygen furnace). Pig iron
as produced with up to about 4.25% Carbon. Steel is a form of
iron where the carbon content is reduced generally to below 1
percent with .2 to .4 percent probably being the most widely
produced range. Othe elements are added to produce specific
properties. This a a great simplification- A more complete
explaination of Iron and Steel production and properties would
take a large book to cover even simply. One thing to remwmber
Iron is about the only solvent for carbon therfore never attempt
to cast a diamond in iron or steel if you expect to find the
diamond. Jesse
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