Zinkberatung e. V. 1981 Grade G-ZnAl8Cu1 cast condition

Want to keep this datasheet? Save it now in your required format


The material ZnAl8Cu1, a fine zinc block metal alloy acc. to ASTMB 669, german marking ZA 8, is the best alloy for casting with continuous form. It has the smallest strength, but best surface treatment characteristics opposite the marks ZnAl12Cu1 and ZnAl27Cu2. The alloy is outstanding pressure-tight, even in thin cross sections, excellently machinably and on high polish sharpening and polishingable. The alloy is used mainly for sand and ingot casting, in addition, for die casting on cold chamber machines. The alloy ZA 8 exhibits a clearly improved creep rupture behaviour in relation to the alloy Z 430 (G-ZnAl4Cu3).

Equivalent Materials

This material data has been provided by WIAM.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

See where falls on the material property chart for against in your materials selection and design process. Our Ashby charts are interactive with more technical data upon clicking. Sign up to get access to this premium feature for free.





20.0 °C

6.3 g/cm³

Show Material materials with Density of 6.3 g/cm³



Elastic modulus

20.0 °C

85 GPa

Show Material materials with Elastic modulus of 85 GPa

Elongation A50

20.0 °C

1 - 2 %

Show Material materials with Elongation A50 of 1 - 2 %

Hardness, Brinell

20.0 °C

85 - 90 [-]

Show Material materials with Hardness, Brinell of 85 - 90 [-]

Poisson's ratio

23.0 °C

0.3 [-]

Show Material materials with Poisson's ratio of 0.3 [-]

Typical for Zinc Aluminium

Tensile strength

20.0 °C

220 - 275 MPa

Show Material materials with Tensile strength of 220 - 275 MPa

Yield strength Rp0.2

20.0 °C

190 - 200 MPa

Show Material materials with Yield strength Rp0.2 of 190 - 200 MPa



Coefficient of thermal expansion

23.0 °C

2.2E-5 - 2.8E-5 1/K

Show Material materials with Coefficient of thermal expansion of 2.2E-5 - 2.8E-5 1/K

Typical for Zinc Aluminium

Melting point

375 - 485 °C

Show Material materials with Melting point of 375 - 485 °C

Typical for Zinc Aluminium

Specific heat capacity

23.0 °C

393 - 525 J/(kg·K)

Show Material materials with Specific heat capacity of 393 - 525 J/(kg·K)

Typical for Zinc Aluminium

Thermal conductivity

23.0 °C

105 - 125 W/(m·K)

Show Material materials with Thermal conductivity of 105 - 125 W/(m·K)

Typical for Zinc Aluminium

Chemical properties



8 - 8.8 %

Show Material materials with Aluminium of 8 - 8.8 %


3E-3 %

Show Material materials with Cadmium of 3E-3 %


0.8 - 1.3 %

Show Material materials with Copper of 0.8 - 1.3 %


0.1 %

Show Material materials with Iron of 0.1 %


4E-3 %

Show Material materials with Lead of 4E-3 %


0.02 - 0.03 %

Show Material materials with Magnesium of 0.02 - 0.03 %


2E-3 %

Show Material materials with Tin of 2E-3 %


89.76 %

Show Material materials with Zinc of 89.76 %

Technological properties

Processing methods

permanent mould casting