Graphite steel rolls are composed mainly of pearlite with spherical graphite and some carbide. Graphite steel rolls are stronger than cast iron rolls and harder than other steel rolls. The feature of graphite rolls that is better resistance to fire crack and scale adhesion.
Graphite steel roll
Graphite steel rolls are composed mainly of pearlite with spherical graphite and some carbide. Graphite steel rolls are stronger than cast iron rolls and harder than other steel rolls. The feature of graphite rolls is better resistance to fire cracking and scale adhesion.
Technical Specification
Below is a reference presentation for the main material direction, technical range, and service position of Graphite Steel Rolls. Final specification should be confirmed according to drawing, line condition, and target performance.
Chemical Composition and Physical Properties
| Symbol | C | Si | Mn | Cr | Ni | Mo | Barrel Hardness HS | Roll Neck Hardness HS | Tensile Strength MPa |
|---|---|---|---|---|---|---|---|---|---|
| GS140 | 1.30-1.50 | 1.30-1.60 | 0.50-1.00 | 0.40-1.00 | - | 0.20-0.50 | 36-46 | ≤46 | ≥540 |
| GS150 | 1.40-1.60 | 1.00-1.70 | 0.60-1.00 | 0.60-1.00 | 0.20-1.00 | 0.20-0.50 | 40-50 | ≤50 | ≥500 |
| GS160 | 1.50-1.70 | 0.80-1.50 | 0.60-1.00 | 0.50-1.50 | 0.20-1.00 | 0.20-0.80 | 45-55 | ≤50 | ≥500 |
| GS190 | 1.80-2.00 | 0.80-1.50 | 0.60-1.00 | 0.50-2.00 | 0.60-2.20 | 0.20-0.80 | 50-65 | ≤50 | ≥450 |
Recommended Applications
- Intermediate stands of long product mills.
- Section and bar rolling positions.
- Grooved roll applications requiring stable wear performance.
- Thermally loaded rolling service conditions.
- Positions requiring steel-grade toughness and practical service life.
Product Features
- Good thermal stability with reliable toughness.
- Stable hardness performance with practical wear resistance.
- Suitable for grooved roll applications in section and bar mills.
- Balanced performance for rolling positions requiring both strength and wear life.