Spheroidal Graphite Iron Rolls By Makkah Steel Alloys

Spheroidal Graphite Iron Rolls (S.G. Rolls) 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. Chemical Composition Rolls C Si Mn Cr Ni Mo Pearlitic 2.90-3.40 1.40-2.50 0.50-0.70 0.15-0.35 1.50-2.00 0.25-0.60 Pearlitic 3.20-3.50 1.20-1.90 0.60-0.90 0.25-0.50 1.50-2.50 0.25-0.60 Accicular 3.20-3.50 1.20-1.70 0.50-0.70 0.30-0.70 2.00-3.00 0.70-1.10 Accicular 3.25-3.55 1.20-1.50 0.50-0.70 0.30-0.80 2.80-4.00 0.70-1.20