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EN 12844 Grade ZP3 – Superior Ductility for Precision Pressure Castings

The material ZP3 with the material number ZP0400 is applied for pressure castings. If high demands are made on the dimensional accuracy of the pressure casting products, this alloy ought to be preferably used. The material possesses considerably higher ductility than the other alloys. In comparison to the material ZP5 (ZP0410), it shows strength properties that are a little worse as well as lower corrosion-resistance to intercrystalline corrosion. The tensile strength depends on the wall thickness. With the wall thickness of the casting becoming smaller, the strength increases. The casting temperature ought to be about 425 degrees C (450 degrees C maximum) the forming temperature (pressure casting) is to be adjusted to about 180 to 250 degrees C maximum. According to DIN EN 12844, the alternating stress fatigue strength (time strength) is 48 N/mm² with 10 million reversals of stress the creep life (0.5 per cent, 3000 h) is 80 N/mm². The temperature coefficient of the length is 27 µm/m*K.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

6.7 g/cm³

Mechanical

PropertyTemperatureValueComment

Bending Fatigue Strength

23.0 °C

48 MPa

Elastic modulus

20.0 °C

85 GPa

Elongation

20.0 °C

3 %

80.0 °C

10 %

150.0 °C

21 %

Elongation A50

20.0 °C

10 %

23.0 °C

10 %

Hardness, Brinell

20.0 °C

80 - 83 [-]

23.0 °C

83 [-]

80.0 °C

55 [-]

150.0 °C

28 [-]

Poisson's ratio

23.0 °C

0.3 [-]

Typical for Zinc Aluminium

Tensile strength

20.0 °C

275 - 280 MPa

23.0 °C

280 MPa

80.0 °C

222 MPa

150.0 °C

140 MPa

Yield strength Rp0.2

20.0 °C

200 - 220 MPa

23.0 °C

200 MPa

80.0 °C

160 MPa

150.0 °C

70 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

23.0 °C

393 - 525 J/(kg·K)

Typical for Zinc Aluminium

Thermal conductivity

20.0 °C

113 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical conductivity

20.0 °C

1.51E+7 S/m

Electrical resistivity

20.0 °C

6.6E-8 Ω·m

Chemical properties

PropertyValue

Aluminium

3.7 - 4.3 %

Cadmium

5E-3 %

Copper

0.1 %

Iron

0.05 %

Lead

5E-3 %

Magnesium

0.03 - 0.06 %

Nickel

0.02 %

Other

Rest Zn

Silicon

0.03 %

Tin

2E-3 %

Zinc

95.43 %


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