TSR | Expert of Mill Rolls
Trust Stemming from Reliability
High-speed steel rolls are manufactured by centrifugal casting, the core material as spheroidal graphite cast iron. By adding vanadium, tungsten, niobium and other alloying elements and special heat treatment, the distribution of this material becomes martensite with good uniformity to ensure high hardness and hardness uniformity of Shell. High-speed steel materials deliver high hardness and wear resistance at high temperature. It can be used for finishing stand to increase the operating time and improve the quality of the surface of rolling material.
| CLASSFICATION | CHEMISTRY |
BARREL HARDNESS (HSC) |
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| C | Si | Mn | P | S | Cr | Ni | Mo | V | W | ||
| High Speed Steel | 1.50-2.20 | 0.30-1.00 | 0.40-1.20 | ≤0.030 | ≤0.025 | 3.00-8.00 | 0.00-1.50 | 2.00-8.00 | 2.00-9.00 | 0.00-8.00 | 75-95 |
| TYPICAL PHYSICAL PROPERTIES |
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| Material | Neck Hardness (HSC) | Tensile Strength (N/mm2) |
Unevenness of Barrel Surface Hardness (HSD) |
| High Speed Steel | 30-45 | ≥350 | ＜5 |
Hardness Distribution
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