Zamak 8
ZnAl8Cu1 / ZL0810
A good gravity casting alloy, Zamak 8 is rapidly growing for pressure die casting
Zamak 8 can be hot chamber die cast, with improved strength, hardness and creep properties over ZAMAK’s, with the exception of a zamak 2 alloy which is very similar in performance
Zamak 8, or zinc aluminum alloy, contains significantly more aluminum than the Zamak group of alloys. Zamak 8 contains approximately 8.4% aluminum and is the only zamak alloy that can be hot-chamber die cast, an important consideration when selecting a material for a component
- It is ideal for decorative applications
- Zamak 8 has excellent finishing and plating characteristics and was originally developed as a permanent mold alloy
- In terms of mechanical performance, Zamak 8 has the highest creep strength of any zinc alloy and the highest strength of any hot-chamber die cast zinc alloy
Zamak 8 Chemical, Physical and Mechanical Properties
1
Zamak 8 Chemical Analysis
Analysis ( %) | Zamak 8 / ZnAl8Cu1 |
---|---|
Al | 8.2 – 8.8 |
Cu | 0.9 – 1.3 |
Mg | 0.02 – 0.03 |
Pb | ≤0.005 |
Fe | ≤0.035 |
Cd | ≤0.005 |
Sn | ≤0.002 |
Si | ≤0.035 |
Ni | ≤0.001 |
2
Zamak 8 General Mechanical Properties
Mechanical Properties | Metric Value |
---|---|
Ultimate Tensile Strength | 374 MPa |
Yield Strength (0.2% offset) | 290 MPa |
Impact Strength | 42 J |
Elongation % in 2 | 6 – 10 |
Shear Strength | 275 MPa |
Compressive Yield Strength | 290 MPa |
Fatigue Strength (reverse bending 5×108cycles) | 103 MPa |
Hardness | 95 – 110 Brinell |
3
Zamak 8 General Physical Properties
Physical Properties | Metric Value |
---|---|
Solidification Range (melting range) | 375 – 404 C |
Density | 6.3 kg/dm3 |
Coefficient of Thermal Expansion | 23.3 μm/m-°C |
Thermal Conductivity | 114.7 W/mK |
Specific Heat Capacity | 435 J/kg-°C |