When it comes to surviving the most brutal thermal shocks and severe impacts in steel plant reversing stands, DURON’s Ferritic SG Iron Rolls (internationally designated as SGF Rolls) stand completely unmatched. Characterized under the microscope by a unique “bull’s eye effect”—where graphite nodules are encapsulated by a highly ductile ferritic boundary layer—these rugged spinning castings act as internal shock absorbers to prevent cracking.
Specifically optimized for blooming mills, reversing breakdown stands, and initial heavy roughing applications, this high-tenacity alloy completely eliminates the risk of roll neck breakage under severe duty. For steel rolling mills plagued by deep fire-cracking and rapid thermal fatigue, upgrading to this premium metallurgical solution provides the ultimate guarantee to sustain maximum operational uptime.
### Chemical Composition & Physical Properties DURON’s Ferritic SG Iron Rolls are engineered to survive the most punishing environments in the initial breakdown and blooming phases. By utilizing precise alloy balancing combined with specialized stress-relieving annealing, these heavy-duty tools deliver exceptional structural rigidity and an elite resistance to catastrophic fire-cracking. | Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) | Hardness (HSD) | Tensile (N/mm²) | | :— | :— | :— | :— | :— | :— | :— | :— | :— | :— | :— | | **SGF – Standard** | 2.80-3.50 | 1.50-2.50 | 0.40-0.65 | ≤ 0.15 | ≤ 0.03 | **0.20-0.25** | **1.50-2.80** | **0.20-0.60** | **50-70** | ≥ 450 | *Metallurgical Highlight: The controlled Chromium (Cr) and Molybdenum (Mo) balance inside our SGF Rolls creates a mostly pearlitic-to-ferritic matrix surrounding the graphite nodules, maximizing thermal shock resistance while maintaining high tensile strength (UTS up to 700 N/mm²) for severe breakdown duties.*
