| Spheroidal Graphite Cast Iron (S
G Iron) or Ductile Iron is considered as one of the
most versatile roll materials now a days. It is produced
by a small proportion of magnesium added to the melt
as nickel-magnesium or alternative alloy, or as pure
magnesium. In S G Iron Roll, the free carbon takes the
shape of spheroids or nodules, thereby eliminating the
notch effect of flake graphite and improving upon the
mechanical properties of the cast iron.
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