TSR | Expert of Mill Rolls
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Alloy Indefinite Chilled Cast Iron is a material between chill cast iron and grey cast iron. The sizes, shapes and distributions of graphite and carbide are controlled by the chilling effect and the contents of alloy elements. The addition of alloy elements such as Manganese, Nickel, Chromium, and Molybdenum changes the matrix microstructure from pearlite, bainite to martensite. The presence of small amount of fine graphite enhances the roll’s resistance to spallling, thermal crack and wearability. This roll has small hardness gradient in the working layer of roll barrel
| MATERIAL | GRADE | CHEMISTRY |
BARREL HARDNESS (HSC) |
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| C | Si | Mn | Cr | Ni | Mo | V | W | Nb | |||
| Indefinite Chilled (IC) |
IC III | 2.90-3.60 | 0.60-1.20 | 0.40-1.20 | 0.70-1.20 | 2.01-3.00 | 0.20-1.00 | / | / | / | 38-55 |
| IC IV | 2.90-3.60 | 0.60-1.50 | 0.40-1.20 | 1.00-2.00 | 3.01-4.00 | 0.20-1.00 | / | / | / | 35-50 | |
| IC V | 2.90-3.60 | 0.60-1.50 | 0.40-1.20 | 1.00-2.00 | 3.01-4.80 | 0.20-2.00 | 0.20-2.00 | 0.00-2.00 | 0.00-2.00 | 40-50 | |
| TYPICAL PHYSICAL PROPERTIES |
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| Material | Tensile Strength (N/mm2) |
Bending Strength (N/mm2) |
Elongation （%） |
| IC | 400-500 | 700-1000 | 0.2-0. |
Hardness Distribution
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