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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

PropertyTemperatureValue

Density

20.0 °C

6.7 g/cm³

Mechanical

PropertyTemperatureValueComment

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

PropertyTemperatureValueComment

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

PropertyTemperatureValue

Electrical conductivity

20.0 °C

1.60E+7 S/m

Chemical properties

PropertyValue

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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