Zamak 3 / ZL0400 / ZnAl4
Zamak 3 is the de facto standard for the zamak series of zinc alloys; all other zinc alloys are compared to this. It has excellent castability and long term dimensional stability.
Zamak 3 also offers excellent finishing characteristics for plating, painting and chromate treatments. It is the “standard” by which other zinc alloys are rated in terms of die casting
Excellent balance of desirable physical and mechanical properties
Zamak 3 has the base composition for the zamak alloys (96% zinc, 4% aluminium)
• Superb castability and long-term dimensional stability
• Excellent finishing characteristics for plating, painting, and chromate treatments
• Excellent damping capacity and vibration attenuation in comparison to aluminum die cast alloys
Zamak 3 (EN1774 European Standard) Chemical Analysis
| Analysis (EN1774) ( %) | Zamak 3 / ZL0400 / ZnAl4 |
|---|---|
| Al | 3.8 – 4.2 |
| Cu | 0.03 |
| Mg | 0.035 – 0.06 |
| Pb | ≤0.003 |
| Fe | ≤0.02 |
| Cd | ≤0.003 |
| Sn | ≤0.001 |
| Si | ≤0.02 |
| Ni | ≤0.001 |
Zamak 3 General Mechanical Properties
| Mechanical Properties | Metric Value |
|---|---|
| Ultimate Tensile Strength | 268 MPa |
| Yield Strength | 208 MPa |
| Impact Strength | 46 J (56 J aged) |
| Elongation at Fmax | 3% |
| Elongation at Fracture | 6,3% (16% aged) |
| Shear Strength | 214 MPa |
| Compressive Yield Strength | 414 MPa |
| Fatigue Strength (reverse bending 5×108cycles) | 48 MPa |
| Hardness | 97 Brinell |
| Modulus of Elasticity | 96 GPa |
Zamak 3 General Physical Properties
| Physical Properties | Metric Value |
|---|---|
| Solidification Range (melting range) | 381—387 °C |
| Density | 6.7 kg/dm3 |
| Coefficient of Thermal Expansion | 27.4 μm/m-°C |
| Thermal Conductivity | 113 W/mK |
| Electrical Resistivity | 6.37 μΩ-cm at 20 °C |
| Latent Heat (heat of fusion) | 110 J/g |
| Specific Heat Capacity | 419 J/kg-°C |
| Coefficient of Friction | 0.07 |
