BR Forging

Spheroidal Graphite (Nodular) Cast Iron

S.G. Iron (Nodular) or Ductile Iron Rolls are available in a wide range of hardness & composition for a variety of application. The matrix structure varies from Ferrito-Pearlitic, Pearlitic to Bainitic & Martensitic together with different carbide contents and graphite in the form of spheroids/nodules. Some critical grades are heat treated for higher strength. Chemical composition and structure are chosen to suit specific application.

Application: Roughing and intermediate rolls for slabbing and blooming mills. Roughing, intermediate and finishing for rail and structural mils. Finishing for wire rod and narrow strip mils.

CHEMICAL COMPOSITION

GradeHS RangeCMnSiPSNiCrMoUTS
Kgmf/mm²
Pearlitic40-503.0/3.30.3/0.61.5/2.30.10
Max.
0.015
Max.
1.5/2.00.30
Max.
0.25/0.450-65
Pearlitic50-603.0/3.30.3/0.61.5/2.30.10
Max.
0.015
Max.
1.5/2.00.40
Max.
0.25/0.450-60
Pearlitic60-703.10/3.500.5/1.001.3/1.80.10
Max.
0.015
Max.
1.5/2.50.3/0.80.3/0.650-60
Pearlitic70-753.10/3.500.5/1.001.3/1.80.10
Max.
0.015
Max.
1.5/2.50.3/0.80.3/0.640-60
Bainitic acicular40-503.0/3.30.3/0.51.80/2.300.080
Max.
0.015
Max.
2.00/3.000.20
Max.
0.6/0.960-70
Bainitic acicular50-603.0/3.30.3/0.51.80/2.300.080
Max.
0.015
Max.
2.00/3.000.50
Max.
0.7/1.055-70
Bainitic acicular60-703.10/3.500.5/0.81.30/2.000.080
Max.
0.015
Max.
2.00/3.500.30/0.800.8/1.1050-70
Bainitic acicular70-803.10/3.500.5/0.81.30/2.000.080
Max.
0.015
Max.
2.50/4.500.30/0.800.8/1.1050-70