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Zamak 5 vs. 5456 Aluminum

Zamak 5 belongs to the zinc alloys classification, while 5456 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (6, 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 5 and the bottom bar is 5456 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
68
Elongation at Break, % 6.3
11 to 18
Fatigue Strength, MPa 56
130 to 210
Poisson's Ratio 0.25
0.33
Shear Modulus, GPa 33
26
Shear Strength, MPa 260
190 to 210
Tensile Strength: Ultimate (UTS), MPa 330
320 to 340
Tensile Strength: Yield (Proof), MPa 240
150 to 250

Thermal Properties

Latent Heat of Fusion, J/g 120
390
Maximum Temperature: Mechanical, °C 95
190
Melting Completion (Liquidus), °C 390
640
Melting Onset (Solidus), °C 380
570
Specific Heat Capacity, J/kg-K 410
900
Thermal Conductivity, W/m-K 110
120
Thermal Expansion, µm/m-K 27
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
29
Electrical Conductivity: Equal Weight (Specific), % IACS 37
97

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 6.4
2.7
Embodied Carbon, kg CO2/kg material 3.0
9.0
Embodied Energy, MJ/kg 57
150
Embodied Water, L/kg 380
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
33 to 46
Resilience: Unit (Modulus of Resilience), kJ/m3 330
170 to 470
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 23
50
Strength to Weight: Axial, points 14
33 to 35
Strength to Weight: Bending, points 16
38 to 40
Thermal Diffusivity, mm2/s 42
48
Thermal Shock Resistance, points 9.9
14 to 15

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
92 to 94.8
Cadmium (Cd), % 0 to 0.0050
0
Chromium (Cr), % 0
0.050 to 0.2
Copper (Cu), % 0.7 to 1.3
0 to 0.1
Iron (Fe), % 0 to 0.1
0 to 0.4
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.025 to 0.080
4.7 to 5.5
Manganese (Mn), % 0
0.5 to 1.0
Nickel (Ni), % 0 to 0.020
0
Silicon (Si), % 0 to 0.030
0 to 0.25
Tin (Sn), % 0 to 0.0030
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 94.3 to 95.7
0 to 0.25
Residuals, % 0
0 to 0.15