EN 12844 Grade GD‑ZnAl4Cu1: Optimal Cast Condition for Die Casting
The material GD-ZnAl4Cu1, material NR. 2.2141, characteristic Z 410, is the advantages alloy for pieces of die casting. The alloy combine good mechanical characteristics, good corrosion resistance, good dimensional accuracy and dimensional stability as well as the possibility for galvanically deposition nearly all metals on cast pieces of this alloy. With attention of increased purity and suitable processing conditions the material GD-ZnAl4Cu1 is applicable also under extreme climate conditions. The casting temperature is to amount to about 425 °C (max. 450 °C), the form temperature (pressure pouring) is on approximately 180 to max. to adjust 250 °C.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 6.7 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 130 GPa | |
Elongation | 20.0 °C | 2 - 5 % | |
Hardness, Brinell | 20.0 °C | 85 - 105 [-] | |
Poisson's ratio | 23.0 °C | 0.3 [-] | Typical for Zinc Aluminium |
Tensile strength | 20.0 °C | 280 - 350 MPa | |
Yield strength Rp0.2 | 20.0 °C | 220 - 250 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 2.2E-5 - 2.8E-5 1/K | Typical for Zinc Aluminium |
Melting point | 375 - 485 °C | Typical for Zinc Aluminium | |
Specific heat capacity | 20.0 °C | 427 J/(kg·K) | |
Thermal conductivity | 20.0 °C | 92 - 100 W/(m·K) |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical conductivity | 20.0 °C | 1.60E+7 S/m |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 3.5 - 4.3 % |
Copper | 0.4 - 1.1 % |
Iron | 5E-3 % |
Magnesium | 0.02 - 0.06 % |
Nickel | 0.02 % |
Tin | 0.02 % |
Zinc | 94.44 % |
Technological properties
| Property | ||
|---|---|---|
| Processing methods | pressure die casting, separately cast test sample | |
Metal
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