| Hitachi Symbol |
Material Substance |
Main Usage | Characteristics |
|---|---|---|---|
| FH-11 | 3%Cr Steel | Tandem Mill Intermediate Roll Reversing Mill Intermediate Roll Skinpass Mill Intermediate Roll |
General Use |
| FH-15 | 5% Cr Steel | Tandem Mill Intermediate Roll Reversing Mill Intermediate Roll Skinpass Mill Intermediate Roll |
Deep Hardness Penetration |
| FH-20 | Special Material |
Tandem Mill Intermediate Roll Intermediate Roll for Dull Work Roll |
High Wear Resistance |
| FP-7 | Hot Die Steel | Tandem Mill Final Stand Intermediate Roll | Crack Resistance Work Roll Protection Low Hardness Type |
| FP-X | High V Type | Continuous Tandem Mill Intermediate Roll |
Wear Resistance Abrasion Resistance |
| E-61 | High Speed Steel | Continuous Tandem Mill Intermediate Roll | Wear Resistance High Hardness Type |
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