Zinc Beratung e.V. 1981 – G‑ZnAl12Cu1 Casting Properties & Applications
The material ZnAl12Cu1, a fine zinc block metal alloy acc. to ASTM B 669, german marking ZA 12, is usually the first choice with the transition coming from steel, brass or aluminum. It possesses best casting bar during conventional sand casting assembly. The alloy does not exhibit best workability and has not hard places. It is outstanding pressure tight, even in thin cross sections and is on high polish sharpening and polishingable. The alloy is used mainly for sand and ingot casting, in addition, for pressure casting on cold chamber machines.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 6.03 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 82.5 GPa | |
Elongation A50 | 20.0 °C | 1 - 5 % | |
Hardness, Brinell | 20.0 °C | 105 - 125 [-] | |
Poisson's ratio | 23.0 °C | 0.3 [-] | Typical for Zinc Aluminium |
Tensile strength | 20.0 °C | 275 - 345 MPa | |
Yield strength Rp0.2 | 20.0 °C | 206 - 220 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 | 23.0 °C | 393 - 525 J/(kg·K) | Typical for Zinc Aluminium |
Thermal conductivity | 23.0 °C | 105 - 125 W/(m·K) | Typical for Zinc Aluminium |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 10.5 - 11.5 % |
Cadmium | 3E-3 % |
Copper | 0.5 - 1.25 % |
Iron | 0.08 % |
Lead | 4E-3 % |
Magnesium | 0.02 - 0.03 % |
Tin | 2E-3 % |
Zinc | 87.13 % |
Technological properties
| Property | ||
|---|---|---|
| Processing methods | permanent mould casting | |
Metal
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