| HSS Grades | Normal | Enchanced | High Strength |
| Roll Specification | Ø280 - Ø850 mm | ||
| Density | 7.6 g/cm³ | 7.8 g/cm³ | 8 g/cm³ |
| Casting | Centrifugal Casting | ||
| Heat Treatment | HBW Patented | ||
| Hardness | General: 82-89HSD Different range based on stands | ||
| Hardness Drop | ≤3HSD | ||
| Rolling Temperature | 780ºC-1100ºC | ||
| Pass Life | 4-5 times than CI Rolls | 1.3 tims than HSS Normal | 1.5 tims than HSS Normal |
| Dressing | 1.0-1.5mm | ||
| Use Periods | 8-10 Cycles | ||
| Application | Intermediate and Finishing stands in bar mill | ||
| Fours stands before pre-finishing stands in wire mill | |||
| Hot strip and plate steel working rolls | |||
| Section steel universal mill | |||
Chemical Analysis
| Material | HBW Patented Chemical Composition (%) | |||||||||||
| C | Si | Mn | Cr | Ni | Mo | V | W | P & S | Nb | Co | Others | |
| HSS (Alloy composition changes based on different grades) | 1.5 ~ 2.10 | 0.30 ~ 0.7 | 0.30 ~ 0.70 | 3.00 ~ 6.00 | 0.50 ~ 1.50 | 3.0 ~ 7.0 | 2.0 ~ 8.0 | 1.0 ~ 8.0 | ≤0.03 | Depends on HSS Grade | ||
Physical Properties | ||||||||||||
| Properties | Barrel | Core | ||||||||||
| Tensile Strength | ≥700MPa | ≥450MPa | ||||||||||
| Compressive Strength | ≥2500MPa | -- | ||||||||||


In HBW, Each product need approved strictly inspection. not only for finished products.but also for semi-finished products. we control the quality in each processing.




Warmly welcome to visit our factory. any more information. please contact Nancy (nancy AT hbw com) .








Audited Supplier









