Zamak 2 (Zn-4Al-3Cu-0.035Mg) vs Zamak 7 (Zn-4Al-0.4Mg low-impurity)
Property comparison of Zamak 2 (Zn-4Al-3Cu-0.035Mg) and Zamak 7 (Zn-4Al-0.4Mg low-impurity), both zinc alloy.
| Property | Zamak 2 (Zn-4Al-3Cu-0.035Mg) | Zamak 7 (Zn-4Al-0.4Mg low-impurity) | Difference |
|---|---|---|---|
| Yield strength | 283 MPa | 221 MPa | -22% |
| Tensile strength | 359 MPa | 283 MPa | -21% |
| 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 | 100 HB | 80 HB | -20% |
| 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 | 385 °C | 384 °C | 0% |
Difference is Zamak 7 (Zn-4Al-0.4Mg low-impurity) relative to Zamak 2 (Zn-4Al-3Cu-0.035Mg). 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
- AC43A
- standard
- ASTM B86
- heat treatment
- die cast
- grade
- AG40B
- standard
- ASTM B86
- heat treatment
- die cast
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