ZA 8

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

  • ZA-8 has excellent finishing and plating characteristics and was originally developed as a permanent mold alloy
  • It is ideal for decorative applications
  • Although it does not have as good casting characteristics as the other zinc alloys, it offers significantly improved strength, hardness, and creep properties
  • In terms of mechanical performance, ZA 8 has the highest creep strength of any zinc alloy and the highest strength of any hot-chamber die cast zinc alloy

Mechanical Properties

Material Alloy Elongation   Tensile Strength   Yield Strength (0.2%)   Impact Strength   Shear Strength   Hardness   Process
% in 50mm
PSI x 103
PSI x 103
ft lb
PSI x 103
布氏硬度 (HB)
Zinc Casting Metals
10
54
42
31
40
103

Physical Properties

Material Alloy Density   Melting Point (Average +/- 50)   Thermal Conductivity   Coefficient of Thermal Expansion   Electrical Conductivity   Process
lb/in3
°F
BTU/h∙ft∙°F
µin/in°F
%IACS
Zinc Casting Metals
0.227
733
66.3
12.9
27.7

Composition

Zinc Casting Metals
% ZA 8
Aluminum 8.0-8.8
Copper 0.8-1.3
Magnesium 0.015-0.03
Iron (max) 0.075
Lead (max) 0.006
Cadmium (max) 0.006
Tin (max) 0.003
Nickel (max)
Zinc Bal.
Manganese
Silicon
Other-Metallic
RoHS Compliant

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Last updated 01.10.2020