Zamak 5 (Zn-4Al-1Cu-0.05Mg) vs Zamak 7 (Zn-4Al-0.4Mg low-impurity)
Property comparison of Zamak 5 (Zn-4Al-1Cu-0.05Mg) and Zamak 7 (Zn-4Al-0.4Mg low-impurity), both zinc alloy.
| Property | Zamak 5 (Zn-4Al-1Cu-0.05Mg) | Zamak 7 (Zn-4Al-0.4Mg low-impurity) | Difference |
|---|---|---|---|
| Yield strength | 269 MPa | 221 MPa | -18% |
| Tensile strength | 328 MPa | 283 MPa | -14% |
| Elongation | 7 % | 13 % | +86% |
| Elastic modulus | 85,000 MPa | 85,000 MPa | 0% |
| Density | 6,600 kg/m³ | 6,600 kg/m³ | 0% |
| Brinell hardness | 91 HB | 80 HB | -12% |
| Thermal conductivity | 113 W/m·K | 113 W/m·K | 0% |
| Specific heat | 419 J/kg·K | 419 J/kg·K | 0% |
| Coefficient of thermal expansion | 0.000027 1/K | 0.000027 1/K | 0% |
| Melting point | 383 °C | 384 °C | 0% |
Difference is Zamak 7 (Zn-4Al-0.4Mg low-impurity) relative to Zamak 5 (Zn-4Al-1Cu-0.05Mg). Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- grade
- AC41A
- standard
- ASTM B86
- heat treatment
- die cast
- grade
- AG40B
- standard
- ASTM B86
- heat treatment
- die cast
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