ZA 27 - Zinc Aluminium

ZA-27, or zinc Aluminium alloy, contains significantly more Aluminium than the Zamak group of alloys. The number 27 represents the approximate percentage of Aluminium.

  • ZA-27 has the highest Aluminium content, highest strength, highest melting point, and lowest density of the ZA group
  • This zinc alloy exhibits excellent bearing properties, which allow bearings to be designed into the casting of some applications
  • Its relatively high casting temperature requires the cold-chamber process

Check out our ZA-27 Material Spotlight blog post!

Mechanical Properties

Material Alloy Tensile Strength   Elongation   Hardness   Impact Strength   Young's Modulus   Yield Strength (0.2%)   Fatigue Strength   Creep Limit   Process
MPa
% in 50mm
Brinell (HB)
J
Gpa
MPa
Mpa
Mpa
Zinc
425
3
119
12.8
-
376
-
-

Physical Properties

Material Alloy Density   Melting Point (Average +/- 50)   Coefficient of Thermal Expansion   Thermal Conductivity   Electrical Conductivity   Process
g/cm3
°C
µm/m°K
W / m K
% IACS
Zinc
5.00
431
26.0
123
29.7

Composition

Zinc
% ZA 27 - Zinc Aluminium
Aluminum 25.0-28.0
Copper 2.0-2.5
Magnesium 0.01-0.02
Iron (max) 0.075
Lead (max) 0.006
Cadmium (max) 0.006
Tin (max) 0.003
Nickel (max)
Zinc Bal.
Manganese
Silicon
Other-Metallic
Titanium -
Chromium -
RoHS Compliant

 

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Last updated 03.22.2021