Answer Posted / malayappan
Above 2% of carbon with iron is known as Cast Iron. As per
the Iron-carbon diagram cabon can be maximum to 6.67
percent. However any commercial cast iron will have caron
in the range of 3 to 3.6%. This carbon will be present in
two forms 1. As combined Carbon (Cementite) and the other
one as Free Carbon (Graphite)
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