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Zamak 5 vs. 5056 Aluminum

Zamak 5 belongs to the zinc alloys classification, while 5056 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 5056 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
67
Elongation at Break, % 6.3
4.9 to 31
Fatigue Strength, MPa 56
140 to 200
Poisson's Ratio 0.25
0.33
Shear Modulus, GPa 33
25
Shear Strength, MPa 260
170 to 240
Tensile Strength: Ultimate (UTS), MPa 330
290 to 460
Tensile Strength: Yield (Proof), MPa 240
150 to 410

Thermal Properties

Latent Heat of Fusion, J/g 120
400
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
910
Thermal Conductivity, W/m-K 110
130
Thermal Expansion, µm/m-K 27
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
29
Electrical Conductivity: Equal Weight (Specific), % IACS 37
99

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
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
12 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 330
170 to 1220
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 23
51
Strength to Weight: Axial, points 14
30 to 48
Strength to Weight: Bending, points 16
36 to 50
Thermal Diffusivity, mm2/s 42
53
Thermal Shock Resistance, points 9.9
13 to 20

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
93 to 95.4
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
4.5 to 5.6
Manganese (Mn), % 0
0.050 to 0.2
Nickel (Ni), % 0 to 0.020
0
Silicon (Si), % 0 to 0.030
0 to 0.3
Tin (Sn), % 0 to 0.0030
0
Zinc (Zn), % 94.3 to 95.7
0 to 0.1
Residuals, % 0
0 to 0.15