Zamak 5 (Zamak5)

Basic Properties

Alloy Type
Designation Zamak5
Density 6.7 g/cm³
Melting Point 380-390°C

Composition

Element Percentage

Description

Higher strength zinc die-casting alloy with improved mechanical properties compared to Zamak 3.
Density 6.7 g/cm³
Electrical Resistivity 6.8 μΩ·cm
Tensile Strength 331 MPa
Yield Strength 283 MPa
Elongation 7%
Hardness 91 HB
Machinability Excellent - good machinability with proper tooling
Melting Point 380-390°C
Thermal Conductivity 109 W/(m·K)
Thermal Expansion 27.4 μm/(m·K)
Heat Treatment As-cast condition, not heat treatable
Heat Treatment As-cast condition, not heat treatable
Corrosion Resistance Fair - copper addition improves strength but requires protective finishing

Applications

Automotive parts, marine hardware, machinery components, electrical housings

History

Evolution of Zamak 3 with copper addition for improved strength.