S.G. Iron (Nodular) Or Ductile Iron Rolls Are Available In A Wide Range Of Hardness & Composition Of A Variety Of Applications. The Matrix Structure Varies From Ferrito-pearlitic, Pearlitic To Bainitic & Martensitic Together With Different Carbide Contents And Graphite In The Form Of Spheroids/Nodules. The Rolls Are Used In Roughing, Intermediate As Well As Finishing Stands Of Both Heavy And Light Section Mills. Some Critical Grades Are Heat Treated For Higher Strength. Chemical Composition And Structure Are Chosen To Suit Specific Applications.
CHEMICAL COMPOSITION
| Hardness | C (%) | Mn (%) | Si (%) | P (%) | S (%) | Ni (%) | Cr (%) | Mo (%) |
|---|---|---|---|---|---|---|---|---|
| 50-55 | 3.00/3.50 | 0.30/0.70 | 1.50/2.00 | 0.080 Max. | 0.050 Max. | 1.30/1.80 | 0.50 Max. | 0.40 Max. |
| 55-60 | 3.20/3.60 | 0.40/0.80 | 1.60/2.00 | 0.080 Max. | 0.050 Max. | 1.50/2.00 | 0.70 Max. | 0.50 Max. |
