ZA-27 (Zn-27Al-2Cu-0.015Mg) vs Zamak 7 (Zn-4Al-0.4Mg low-impurity)
Property comparison of ZA-27 (Zn-27Al-2Cu-0.015Mg) and Zamak 7 (Zn-4Al-0.4Mg low-impurity), both zinc alloy.
| Property | ZA-27 (Zn-27Al-2Cu-0.015Mg) | Zamak 7 (Zn-4Al-0.4Mg low-impurity) | Difference |
|---|---|---|---|
| Yield strength | 379 MPa | 221 MPa | -42% |
| Tensile strength | 421 MPa | 283 MPa | -33% |
| Elongation | 2 % | 13 % | +550% |
| Elastic modulus | 78,000 MPa | 85,000 MPa | +9% |
| Density | 5,000 kg/m³ | 6,600 kg/m³ | +32% |
| Brinell hardness | 115 HB | 80 HB | -30% |
| Thermal conductivity | 160 W/m·K | 113 W/m·K | -29% |
| Specific heat | 523 J/kg·K | 419 J/kg·K | -20% |
| Coefficient of thermal expansion | 0.00002 1/K | 0.000027 1/K | +37% |
| Melting point | 430 °C | 384 °C | -11% |
Difference is Zamak 7 (Zn-4Al-0.4Mg low-impurity) relative to ZA-27 (Zn-27Al-2Cu-0.015Mg). Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- standard
- ASTM B86
- heat treatment
- die cast
- grade
- —
- standard
- ASTM B86
- heat treatment
- die cast
- grade
- AG40B
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