Forged steel rolls for cold rolling mills are widely applied to work rolls, intermediate rolls, and backup rolls. With high and homogeneous hardness in the working layer, these rolls provide superior wear resistance, high toughness, and excellent resistance to accidental damage.
The depth of the hardened layer can reach over 30mm depending on the roll design and application requirement. Through optimized forging, heat treatment, and machining processes, LONSUN forged rolls ensure stable hardness distribution and reliable service performance for cold rolling operations.
Chemical Composition
| Symbol | C | Si | Mn | Cr | Ni | Mo | V | W |
| FSC-1 | 0.80-0.95 | 0.15-0.45 | 0.20-0.55 | 1.70-2.40 | ≤0.25 | 0.20-0.40 | ≤0.15 | - |
| FSC-2 | 0.80-0.95 | 0.25-1.00 | 0.20-0.70 | 2.40-3.50 | ≤0.25 | 0.20-1.00 | 0.05-0.15 | - |
| FSC-3 | 0.75-0.95 | 0.20-1.00 | 0.20-0.50 | 2.80-3.60 | ≤0.80 | 0.15-0.40 | - | - |
| FSC-4 | 0.60-0.80 | 0.30-0.80 | 0.40-0.90 | 2.50-3.50 | ≤0.80 | 0.20-0.60 | - | - |
| FSC-5 | 0.70-0.95 | 0.20-0.90 | 0.20-0.50 | 4.00-6.00 | ≤0.80 | 0.15-1.20 | 0.35 | - |
| FSC-6 | 0.33-0.43 | 0.80-1.20 | 0.20-0.50 | 4.75-5.50 | ≤0.80 | 1.10-1.60 | 0.30-0.60 | - |
| FSC-7 | 0.80-0.90 | ≤0.40 | ≤0.40 | 3.80-4.40 | ≤0.80 | 4.50-5.50 | 1.75-2.20 | 5.50-6.75 |
Barrel Hardness (HS)
| Hardness | FSC-1 | FSC-2 | FSC-3 | FSC-4 | FSC-5 | FSC-6 | FSC-7 |
| Barrel | 60-80 | 76-80 | 60-80 | 60-70 | 65-75 | 65-71 | 80-95 |
| Surface | 90-100 | 90-100 | 90-100 | 65-80 | 90-100 | 75-82 | - |
Recommended Hardness (HS)
| Portion | Application | Hardness |
| Barrel | Finishing work rolls for strip and plate mills | 90-96 |
| Cold work rolls and temper rolls for non-ferrous strip, foil and bright sheet | ≥95 | |
| Neck | Small diameter cold work rolls installed with needle roller bearing | ≥80 |
| Cold work rolls with particular requirement of resistance to wear on bearing portion | 50-70 | |
| Work rolls without special requirement | 30-50 |
Product Features
- High and homogeneous working layer hardness.
- Superior wear resistance for cold rolling applications.
- High toughness and excellent resistance to accidental damage.
- Hardened layer depth can reach over 30mm depending on application requirements.
- Suitable for work rolls, intermediate rolls, and backup rolls in cold rolling mills.