Alloy SG Rolls
Superior Strength & Ductility
Premium Quality Alloy SG Rolls
Our Alloy SG (Spheroidal Graphite) rolls are engineered for superior performance with exceptional strength and ductility. These specialized rolls feature spheroidal graphite microstructure, offering outstanding wear resistance and impact strength, making them ideal for steel rolling mills and heavy-duty metal processing applications.
Dynamic Rolls specializes in manufacturing high-quality Alloy SG rolls with decades of industry expertise. Each roll is precision-engineered using advanced metallurgical techniques and controlled heat treatment processes. Our Alloy SG rolls feature superior tensile strength, excellent shock resistance, and enhanced thermal stability, ensuring consistent quality and extended service life even in the most demanding rolling mill operations.
Chemical Analysis
| Designation of Rolls |
Material Code |
C |
Si |
Mn |
Ni |
Cr |
Mo |
Mg |
| CrMo Indefinite Chilled SG Cast Iron Rolls |
SG II |
3.00 - 3.40 |
1.40 - 1.90 |
0.20 - 0.80 |
|
0.20 - 0.60 |
0.20 - 0.60 |
≥ 0.04 |
| NiCrMo Indefinite Chilled SG Cast Iron Rolls (I) |
SG IV |
3.00 - 3.40 |
1.40 - 1.90 |
0.40 - 0.80 |
0.50 - 1.00 |
0.20 - 0.60 |
0.20 - 0.60 |
≥ 0.04 |
| NiCrMo Indefinite Chilled SG Cast Iron Rolls (II) |
SG V |
3.00 - 3.40 |
1.40 - 1.90 |
0.40 - 0.80 |
1.10 - 2.00 |
0.30 - 1.00 |
0.20 - 0.60 |
≥ 0.04 |
Physical Properties
| Designation of Rolls |
Material Code |
Barrel Hardness (HSD) |
Neck Hardness (HSD) |
Tensile Strength (Mpa) |
| CrMo Indefinite Chilled SG Cast Iron Rolls |
SG II |
50 - 70 |
35 - 55 |
> 320 |
| NiCrMo Indefinite Chilled SG Cast Iron Rolls (I) |
SG IV |
55 - 70 |
35 - 55 |
> 320 |
| NiCrMo Indefinite Chilled SG Cast Iron Rolls (II) |
SG V |
60 - 70 |
35 - 55 |
> 320 |
Microstructure
| Designation of Rolls |
Material Code |
Microstructure |
| CrMo Indefinite Chilled SG Cast Iron Rolls |
SG II |
Pearlite + Cementite + Small Graphite |
| NiCrMo Indefinite Chilled SG Cast Iron Rolls (I) |
SG IV |
Pearlite + Cementite + Small Graphite |
| NiCrMo Indefinite Chilled SG Cast Iron Rolls (II) |
SG V |
Fine Pearlife + Cementite + Small Graphite |
Applications
| Designation of Rolls |
Material Code |
Applications |
| CrMo Indefinite Chilled SG Cast Iron Rolls |
SG II |
Profile, Rod, Wire and Narrow Strip Mill Thick in the Rolling Mill Stand |
| NiCrMo Indefinite Chilled SG Cast Iron Rolls (I) |
SG IV |
Profile, Rod, Wire and Narrow Strip Mill Thick in the Rolling Mill Stand |
| NiCrMo Indefinite Chilled SG Cast Iron Rolls (II) |
SG V |
Profile, Rod, Wire and Narrow Strip Mill Thick in the Rolling Mill Stand |
Our SG rolls are manufactured using advanced ductile iron technology with controlled spheroidal graphite formation. The unique microstructure provides superior impact resistance and thermal shock resistance compared to conventional rolls. We employ cutting-edge metallurgical processes and precise heat treatment cycles to ensure each roll delivers exceptional performance, extended service life, and consistent quality in demanding rolling mill operations.
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