High pressure die casting in zinc and alluminium alloys
What is high pressure die casting
High pressure die casting is a very precise forming technique in which molten zinc or aluminium is injected under high pressure into an extremely precise and high quality steel mould (the die).
It is the ideal technique to produce complex parts with high accuracy. The geometry and complexity determine the parts and quantities for which high pressure die casting is favorable.
Pedeo specialises in high pressure die casting, also known as injection moulding or foundry casting, in zinc and aluminium alloys.
Zinc alloys, also known as zamak or zamac, have a number of very interesting advantages because the parts can be casted with precision and thin-walled.
Aluminium casting largely has these same properties and in particular is lighter than zinc casting.
Discover the high pressure die casting process here
Aluminium
Zamak
Why high pressure die casting?
High pressure die casting of zinc and aluminium offers the following technical and economic advantages:
- Efficient and precise casting technique for parts with high accuracy and clean surfaces
- Finishing often unnecessary
- Light, complex and thin-walled parts
- Optimal use of raw materials
- Integration of different functions through extensive freedom of form and complexity
Zinc and aluminium alloys
Pedeo High Pressure Die Casting foundry only uses European certified alloys:
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Comparative table of alloys
| Zamak 5 (ZL-0410) |
Zamak 2 (ZL-0430) |
Alu231 (EN AC-47100) |
Alu226 (EN AC-46000) |
|
| Tensile strength (MPa min) | 280-350 | 330-380 | 220-300 | 240-310 |
| 0.2% yield limit (MPa min) | 220-350 | 310-350 | 140-240 | 140-200 |
| Elongation at break (% min) | 2-5 | 5-10 | 1-3 | 0,5-3 |
| Hardness (Hb min) | 85-105 | 100-130 | 60-100 | 80-120 |
| Specific gravity (g/cm3) | 6,7 | 6,8 | 2,65 | 2,75 |
| Linear expansion coefficient (10-6 K) | 27 | 27 | 21 | 21 |
| Thermal conductivity (W/(m.K)) | 92-105 | 92-105 | 120-140 | 110-130 |
| Electrical conductivity (m/Ωmm2) | 15-16 | 15 | 15-18 | 14-17 |
| Galvanic surface treatment | +++ | +++ | – – – | – – – |
| Technical anodisation | – – | – – | ++ | ++ |
| Machinability | +++ | +++ | +++ | ++ |
| Corrosion resistance | ++ | ++ | ++ | + |
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