Malleable cast iron is produced.....
by adding magnesium to molten cast iron
by quick cooling of molten cast iron
from white cast iron by annealing process
none of these
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by adding magnesium to molten cast iron
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Malleable iron is obtained by the heat treatment of white iron so the hard iron carbide structure of ledeburite is converted to a matrix of ferrite or pearlite and graphite is precipitated within the iron. This form of graphite is sometimes referred to as tempered carbon.
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