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Material List
WD20
JIS standard: VF-40
Features
WD20 JIS standard: VF-40 Cemented carbide with improved corrosion resistance during WEDM.
Carbide grade based on general-purpose KD20 with improved suitability for long period WEDM.
Equipments using WD20
| Press working machine | Cutter machine |
| Powder forming machine | Multi forming machine |
Applications of WD20
| Punch, Die | Die Lip |
| Die coater | Wire drawing dies |
Parts manufactured with WD20
| Terminal | Spring |
| LCD | Fastner |
| Electric wire |
Properties of WD20
| Corrosion resistance | Chipping resistance |
| Oxidation resistance | High toughness |
| Stainless workability general load ≦0.5mm |
Carbide products using WD20
Other characteristics
Physical Properties
| Our grades | Hardness (HRA) | Transverse rupture strength [GPa] | Fracture toughness value [MPa・m½] |
|---|---|---|---|
| WD20 | 90.5 | 3.7 | 15.9 |
| Reference: KD20 | 90.0 | 3.7 | 15.5 |
| Reference: G4 | 89.0 | 2.9 | 22.4 |
Comparison of corrosion-resistance
◆Microstructure of test pieces showing depth of corrosion after 50 hours of immersion during dielectric water WEDM (WATER TYPE) process.
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