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Material List
EW25
JIS standard: VM-40
Features
Compared to other grades with equal hardness, the fracture toughness value of EW25 is relatively high, so with this grade cracking and chipping can be prevented or improved without reducing hardness. It also has excellent corrosion resistance.
The most standard grade among EW grades.
Equipments using EW25
| Press working machine | Class dividers |
| Cutter machine |
Applications of EW25
| Punch, Die, Squeeze ring | Wire drawing dies |
Parts manufactured with EW25
| Laminated motor core | Electric wire |
| Brakes/Clutch friction materials |
Properties of EW25
| Abrasion resistance | Chipping resistance |
| Suitable for stamping electrical steel sheet at medium impact | Corrosion resistance |
Examples of solutions using EW25
Carbide products using EW25
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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