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Material List
EW40
JIS standard: VM-50
Features
Compared to other grades with equal hardness, the fracture toughness value of EW40 is relatively high, so with this grade cracking and chipping can be prevented or improved without reducing hardness. It also has excellent corrosion resistance.
This grade's impact resistance and fracture toughness is higher than EW25 due to higher Co content, however wear resistance is reduced by one rank.
Equipments using EW40
| Press working machine | Cutter machine |
Applications of EW40
| Die |
Parts manufactured with EW40
| Laminated Motor core |
Properties of EW40
| Abrasion resistance | Chipping resistance |
| Workability of electrical steel sheet Punching under heavy loads | Corrosion resistance |
Other characteristics
Characteristic of EW grade
Physical Properties
| Our grade | Hardness (HRA) | Transverse rupture strength [GPa] | Fracture toughness value [MPa・m½] | Density [×10³ kg/m³] {g/cm³} |
|---|---|---|---|---|
| EW10 | 91.0 | 3.5 | 15 | 14.8 |
| EW25 | 89.5 | 3.5 | 22 | 14.3 |
| EW40 | 88.0 | 3.5 | 29 | 13.9 |
Performance of corrosion-resistance
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