PRIME® rolls are Static Cast Pearlitic, Bainitic/Martensitic Nodular (Spheroidal) or Flake Graphite Iron. PRIME® possesses excellent strength for roughing stands and high wear resistance for finishing stands.
| GRADE | PRIME® I | PRIME® II | PRIME® III |
|---|---|---|---|
|
C: 3-3.5% Ni: 1-4% Cr + Mo: <2.5% |
Roughing stands in Billet, 3Hi & Structural Mills Roughing and Intermediate stands in Rod & Bar, Merchant, Heavy & Medium Section Mills Seamless Tube Mills |
Intermediate and Finishing stands in Rod & Bar, Merchant, Light & Medium Section Mills Seamless Tube Mills |
Intermediate and Finishing Stands for Light & Medium Section Mills Bar & Wire Rod Mills Seamless Tube Mills |
| HSc | 45-65 | 55-75 | 60-80 |
| Tensile Strength MPa | 400-600 | 500-700 | 200-400 |
| Bending Strength MPa | 800-1000 | 800-1000 | 300-400 |
| Modulus of Elasticity GPa | 160-180 | 160-180 | 110-140 |
| Microstructure |  |
 |
 |
The hardness adjustment is obtained during a complex heat treatment process. For production, we need a range of 5 ShC which needs to be specified in the roll order.
Our technical team can help to determine the most suitable grade, degree of hardness and manufacturing method to meet with individual mill conditions and specifications.