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Material List
KD20
JIS standard: VF-40
Features
The most standard grade among KD grades. As our most popular grade, it accounts for half of the total weight of carbide products we ship.
Equipments using KD20
| Powder forming machine | Press working machine |
| Cutter machine | Multi forming machine |
Applications of KD20
| Die, Punch, Core, Stripper | Bending punch, Bending die, Shaving punch |
| Cutter, Guide, Conveyor Rails, Chuck Claw | Rotary cutter |
Parts manufactured with KD20
| Terminal, S emiconductor leadframe, LED | Non-woven Fabric |
| Heat sink, fuse, Resistor | Gear, Valve Sheet |
| Dry cell batteries, Anode can, Cathode can, Battery materials |
Properties of KD20
| Abrasion resistance | Chipping resistance |
Examples of solutions using KD20
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Improvement of seizure in staking aluminum work
- Equipment of installation： Stamping machine
- Use： Staking punch
- Issue： Short life Early seizure
- Carbide Material： KD20
- Conventional grade： EF20
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Improvement of early stage wear in carbon powder compacting
- Equipment of installation： Powder mill
- Use： Mold die Mold die
- Issue： Short life Wear at an early stage
- Carbide Material： KD20
- Conventional grade： G3
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非公開: 黄銅+Snメッキ材抜き加工での寿命向上提案
- Equipment of installation： Stamping machine
- Use： Die
- Issue： Short life
- Carbide Material： KD10
- Conventional grade： KD20
-
非公開: 原因不明の連続金型早期破損の対策
- Equipment of installation： Stamping machine
- Use： Punch
- Issue： Short life Breakage
- Carbide Material： KD20
- Conventional grade： VF-40
-
非公開: リン青銅打ち抜き早期摩耗の改善
- Equipment of installation： Stamping machine
- Use： Die
- Issue： Short life Wear at an early stage
- Carbide Material： KD20
- Conventional grade： VF-40
-
非公開: 原因不明の金型早期摩耗の改善①
- Equipment of installation： Stamping machine
- Use： Punch
- Issue： Short life Cause investigation
- Carbide Material： KD20
- Conventional grade： VC-50
Carbide products using KD20
Other characteristics
Physical Properties
| Our grades | Hardness (HRA) | Transverse rupture strength [GPa] | Co amount [％] |
|---|---|---|---|
| KD05 | 92.0 | 3.2 | 8 |
| KD10 | 91.0 | 3.4 | 10 |
| KD20 | 90.0 | 3.7 | 13 |
| KD30 | 89.0 | 3.7 | 16 |
| KD40 | 88.0 | 3.7 | 19 |
| KD50 | 84.5 | 3.0 | 28 |
| Reference: G3 | 90.0 | 2.7 | 8 |
| Reference: G2 | 91.0 | 2.5 | 6 |
Relation between wear-resistance and machining property for KD grade
Chipping-resistance characteristics
Comparison result of profile grinding test
Hardness and TRS
Fracture toughness value
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Catalog
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