Zamak 5
ZL0410 / ZnAl4Cu1
Zamak 5 is used especially in the accessories and automobile industries with its high performance in coating, painting and chromating processes.
Zamak 5 has the same composition as zamak 3 with the addition of 1% copper in order to increase strength (by approximately 10%), hardness and corrosive resistance, but reduces ductility. It also has less dimensional accuracy Zamak 5 is more commonly used in Europe.
Zamak 5 is more readily plated, finished, and machined than Zamak 3
When a measure of tensile performance is needed, Zamak 5 castings are recommended.
- It has a higher copper content than Zamak 3, which results in higher strength
- It has less ductility (increased elongation) than Zamak 3
- Manufacturer must keep in mind that this reduction in ductility can affect formability during secondary operations such as bending, riveting, swaging, and crimping operations
Zamak 5 Chemical, Physical and Mechanical Properties
1
Zamak 5 (EN1774 European Standard) Chemical Analysis
Analysis (EN1774) ( %) | Zamak 5 / ZL0410 / ZnAl4Cu1 |
---|---|
Al | 3.8 – 4.2 |
Cu | 0.7 – 1.1 |
Mg | 0.035 – 0.06 |
Pb | ≤0.003 |
Fe | ≤0.02 |
Cd | ≤0.003 |
Sn | ≤0.001 |
Si | ≤0.02 |
Ni | ≤0.001 |
2
Zamak 5 General Mechanical Properties
Mechanical Properties | Metric Value |
---|---|
Ultimate Tensile Strength | 331 MPa (270 MPa aged) |
Yield Strength | 295 MPa |
Impact Strength | 52 J (56 J aged) |
Elongation at Fmax | 2% |
Elongation at Fracture | 3.6% (13% aged) |
Shear Strength | 262 MPa |
Compressive Yield Strength | 600 MPa |
Fatigue Strength (reverse bending 5×108cycles) | 57 MPa |
Hardness | 91 Brinell |
Modulus of Elasticity | 96 GPa |
3
Zamak 5 General Physical Properties
Physical Properties | Metric Value |
---|---|
Solidification Range (melting range) | 380—386 °C |
Density | 6.7 kg/dm3 |
Coefficient of Thermal Expansion | 27.4 μm/m-°C |
Thermal Conductivity | 109 W/mK |
Electrical Resistivity | 6.54 μΩ-cm at 20 °C |
Latent Heat (heat of fusion) | 110 J/g |
Specific Heat Capacity | 419 J/kg-°C |
Coefficient of Friction | 0.08 |