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EN 12844 Grade G‑ZnAl4Cu3: Advanced Casting Alloy for High‑Strength Applications

The material G-ZnAl4Cu3, material NR. 2.2143, characteristic Z 430, becomes application for sand castings and of ingot castings of all kinds, sheet material-forming tools as well as for injection moulding -, blowing and deep-drawing forms for plastics. The alloy Z 430 is a possible alternative to Z 410, if their strength is not sufficient. It possesses the highest strength and the best creep rupture behaviour from the alloy family with 4 weight percentage aluminum.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

6.8 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

130 GPa

Elongation

20.0 °C

0.5 - 3 %

Hardness, Brinell

20.0 °C

90 - 110 [-]

Poisson's ratio

23.0 °C

0.3 [-]

Typical for Zinc Aluminium

Tensile strength

20.0 °C

220 - 280 MPa

Yield strength Rp0.2

20.0 °C

170 - 230 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

452 J/(kg·K)

Thermal conductivity

20.0 °C

105 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical conductivity

20.0 °C

1.50E+7 - 1.60E+7 S/m

Chemical properties

PropertyValue

Aluminium

3.5 - 4.3 %

Copper

2.5 - 3.2 %

Iron

0.08 %

Magnesium

0.03 - 0.06 %

Tin

2E-3 %

Zinc

92.35 %

Technological properties

Property
Processing methods

permanent mould casting, separately cast test sample


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