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Zamak 2 vs. A356.0 Aluminum

Zamak 2 belongs to the zinc alloys classification, while A356.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is Zamak 2 and the bottom bar is A356.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
70
Elongation at Break, % 6.0
3.0 to 6.0
Fatigue Strength, MPa 59
50 to 90
Poisson's Ratio 0.26
0.33
Shear Modulus, GPa 33
26
Tensile Strength: Ultimate (UTS), MPa 360
160 to 270
Tensile Strength: Yield (Proof), MPa 270
83 to 200

Thermal Properties

Latent Heat of Fusion, J/g 130
500
Maximum Temperature: Mechanical, °C 95
170
Melting Completion (Liquidus), °C 390
610
Melting Onset (Solidus), °C 380
570
Solidification (Pattern Maker's) Shrinkage, % 1.3
1.3
Specific Heat Capacity, J/kg-K 410
900
Thermal Conductivity, W/m-K 110
150
Thermal Expansion, µm/m-K 28
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
40
Electrical Conductivity: Equal Weight (Specific), % IACS 35
140

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 6.5
2.6
Embodied Carbon, kg CO2/kg material 3.0
8.0
Embodied Energy, MJ/kg 57
150
Embodied Water, L/kg 380
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
4.8 to 15
Resilience: Unit (Modulus of Resilience), kJ/m3 420
49 to 300
Stiffness to Weight: Axial, points 7.5
15
Stiffness to Weight: Bending, points 23
53
Strength to Weight: Axial, points 15
17 to 29
Strength to Weight: Bending, points 17
25 to 36
Thermal Diffusivity, mm2/s 41
64
Thermal Shock Resistance, points 11
7.6 to 13

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
91.1 to 93.3
Cadmium (Cd), % 0 to 0.0050
0
Copper (Cu), % 2.5 to 3.3
0 to 0.2
Iron (Fe), % 0 to 0.1
0 to 0.2
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.020 to 0.060
0.25 to 0.45
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0 to 0.020
0
Silicon (Si), % 0 to 0.030
6.5 to 7.5
Tin (Sn), % 0 to 0.0030
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 92.2 to 94
0 to 0.1
Residuals, % 0
0 to 0.15