Zamak 2

Zinc Alloy 2 (ASTM AC43A), also known as Kirksite or Zamak 2, is the highest strength and hardness of the Zamak family. This alloy has excellent casting characteristics including: 

  • A higher creep performance than other Zamak alloys
  • Excellent damping capacity and vibration attenuation in comparison to aluminum die cast alloys
  • High strength and hardness levels after long-term aging

Mechanical Properties

Material Alloy Tensile Strength   Yield Strength   Impact Strength   Shear Strength   Hardness   Elongation   Process
MPa
MPa
J
MPa
Brinell (HB)
% in 50mm
Zinc
359
283
47
317
100
7

Physical Properties

Material Alloy Density   Melting Point   Thermal Conductivity   Coefficient of Thermal Expansion   Electrical Conductivity   Process
g/cm3
°C
W/m K
µm/m°K
%IACS
Zinc
6.60
385
105
27.7
25.0

Composition

Zinc
% Zamak 2
Aluminum 3.5-4.3
Copper 2.5-3.0
Magnesium 0.02-0.05
Iron (max) 0.1
Lead (max) 0.005
Cadmium (max) 0.004
Tin (max) 0.003
Nickel (max)
Zinc Bal.
Manganese
Silicon
Other-Metallic
RoHS Compliant

 

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Last updated 11.18.2019