Zamak 8

zamak
Project Description

ZnAl8Cu1 / ZL0810 / Zamak 8

Zamak 8

A good gravity casting alloy, Zamak 8 is rapidly growing for pressure die casting

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zamak

Zamak 8 can be hot chamber die cast, with improved strength, hardness and creep properties over ZAMAK’s, with the exception of a zamak 2 alloy which is very similar in performance

Zamak 8, or zinc aluminum alloy, contains significantly more aluminum than the Zamak group of alloys. Zamak 8 contains approximately 8.4% aluminum and is the only zamak alloy that can be hot-chamber die cast, an important consideration when selecting a material for a component

It is ideal for decorative applications
Zamak 8 has excellent finishing and plating characteristics and was originally developed as a permanent mold alloy
In terms of mechanical performance, Zamak 8 has the highest creep strength of any zinc alloy and the highest strength of any hot-chamber die cast zinc alloy
Chemical, Physical and Mechanical Properties

Zamak 8 Chemical Analysis

Analysis  ( %) Zamak 8 / ZnAl8Cu1
Al 8.2 – 8.8
Cu 0.9 – 1.3
Mg 0.02 – 0.03
Pb ≤0.005
Fe ≤0.035
Cd ≤0.005
Sn ≤0.002
Si ≤0.035
Ni ≤0.001

Zamak 8 General Mechanical Properties

Mechanical Properties Metric Value
Ultimate Tensile Strength 374 MPa
Yield Strength (0.2% offset) 290 MPa
Impact Strength 42 J
Elongation % in 2 6 – 10
Shear Strength 275 MPa
Compressive Yield Strength 290 MPa
Fatigue Strength (reverse bending 5×108cycles) 103 MPa
Hardness 95 – 110 Brinell

Zamak 8 General Physical Properties

Physical Properties Metric Value
Solidification Range (melting range) 375 – 404 C
Density 6.3 kg/dm3
Coefficient of Thermal Expansion 23.3 μm/m-°C
Thermal Conductivity 114.7 W/mK
Specific Heat Capacity 435 J/kg-°C