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Spheroidal Graphite Iron (Pearlitic) Rolls

Spheroidal Graphite Iron Pearlitic Rolls are structurally characterized as having graphite in nodular form. They have advantages over normal Cast Iron Rolls which have graphite in the form of flakes. They have good strength, high-temperature performance and anti accident performance with small hardness drop on the work layer. Their microstructure consists of nodular graphite and different carbides in a pearlitic matrix.

Applications

  • Roughing and Intermediate stands of TMT Bars Mills and Wire Rod mills.
  • Intermediate and Finishing Stands of Structure and Strip Mills

Grades

  • SGP-52 (50-55 Shore C)
  • SGP-57 (55-60 Shore C)
  • SGP-62 (60-65 Shore C)

Mechanical Properties

  • Tensile Strength: 450-600 Kg/mm²
  • Bending Strength: 800-1100 Kg/mm²
Chemical Composition
Grade Hardness
(Shore C)
C% Mn% Si% S% P% Cr% Ni% Mo%
SGP-52 50-55 3.0-3.3 0.4-0.7 1.5-2.0 0.02 Max 0.05 Max 0.4-0.6 1.4-1.7 0.2-0.4
SGP-57 55-60 3.0-3.4 0.4-0.7 1.5-1.8 0.02 Max 0.05 Max 0.4-0.7 1.5-1.8 0.2-0.5
SGP-62 60-65 3.1-3.5 0.4-0.7 1.5-1.8 0.02 Max 0.05 Max 0.4-0.7 1.6-2.0 0.2-0.5