High Speed Steel Roll (HSS)
The microstructure of HSS roll shows fine and diffuse carbide of MC and M6C embedded in the Martensite. The performance of wear resistance, thermal hardness and thermal fatigue resistance of HSS roll is excellent.
Table.1 Chemical Composition
| Symbol | C | Si | Mn | Cr | Ni | Mo | V | W |
| HSS | 1.5-2.2 | 0.3-1.0 | 0.4.-1.20 | 3.0-8.0 | 0.5-1.5 | 2.0-8.0 | 2.0-8.0 | 0.0-8.0 |
Table.2 Physical Performance
| Barrel Harness (HSD) |
Journal Hardness (HSD) |
Tensile Strength (Mpa) |
Hardness
Uniformity(HSD) |
Thichness Difference of Shell(mm) |
| 60-90 | 35-45 | >400 | <3 | <10 |
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