Pearlitic nodular rolls are produced by adding alloying elements to nodular cast iron, followed by special heat treatment. They offer high strength, good thermal properties, resistance to thermal shocks, and a small hardness gradient in the working layer.
| Grade | Element Composition | |||||
| C | Si | Mn | Cr | Ni | Mo | |
| SGP I | 3.30 – 3.50 | 1.70 – 1.90 | 0.40 – 0.60 | 0.30 – 0.50 | 0.30 – 0.50 | 0.10 – 0.20 |
| SGP II | 3.30 – 3.50 | 1.60 – 1.80 | 0.50 – 0.70 | 0.30 – 0.50 | 0.40 – 0.60 | 0.10 – 0.20 |
| SGP III | 3.30 – 3.50 | 1.50 – 1.70 | 0.50 – 0.70 | 0.40 – 0.60 | 0.60 – 0.80 | 0.20 – 0.40 |
| SGP IV | 3.30 – 3.50 | 1.40 – 1.60 | 0.50 – 0.70 | 0.50 – 0.70 | 1.00 – 1.20 | 0.20 – 0.40 |
| SGP V | 3.30 – 3.50 | 1.30 – 1.50 | 0.50 – 0.70 | 0.60 – 0.80 | 1.20 – 1.40 | 0.20 – 0.40 |
| Grade | Barrel Hardness (HSC) | Tensile Strength (MPa) | Bending Strength (MPa) |
| SGP I | 45 – 50 | > 400 | > 800 |
| SGP II | 50 – 55 | > 400 | > 800 |
| SGP III | 55 – 60 | > 400 | > 800 |
| SGP IV | 60 – 65 | > 400 | > 800 |
| SGP V | 65 – 70 | > 400 | > 800 |
Copyright © METALFLOW PTE. LTD. All Rights Reserved.
Copyright © METALFLOW PTE. LTD. All Rights Reserved.