DURA™ is manufactured using our clean steel melting technology, which is vacuum degassed and ladle furnace refined before casting. Alloyed with Cr-Ni-Mo and heat-treated to produce a fine Pearlitic / Bainitic structure, DURA™ is offered with different carbon levels and flexible hardness ranges to suit a variety of rolling applications.
| GRADE | DURA™ A | DURA™ B | DURA™ C | DURA™ D | DURA™ GT |
|---|---|---|---|---|---|
|
C: 0.5-1.7% Ni: 0.5-2.5% Cr + Mo: <4% |
Roughing and Intermediate stands for Medium and Heavy Section Mills, Rail Mills, Breakdown stands for Structural Mills, Ball Mills |
Roughing, Intermediate and Finishing stands for Medium and Heavy Section Mills, Rail Mills, Breakdown stands for Structural Mills, Ball Mills |
Roughing, Intermediate and Finishing stands for Medium and Heavy Section Mills, Rail Mills, Breakdown stands for Structural Mills |
Roughing, Intermediate and Finishing stands for Medium and Heavy Section Mills, Rail Mills |
Sleeves and Rings for Universal stands of Structural, Medium and Heavy Section Mills |
| HSc | 35-50 | 40-50 | 40-55 | 50-60 | 55-65 |
| Tensile Strength MPa | 650-740 | 450-500 | 450-500 | 450-500 | 600-800 |
| Bending Strength MPa | 700-1100 | 508-775 | 508-775 | 550-750 | 600-800 |
| Modulus of Elasticity GPa | 200-220 | 200-220 | 170-190 | 170-190 | 210-220 |
| Microstructure |  |
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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.