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Zamak 3 vs. 4045 Aluminum

Zamak 3 belongs to the zinc alloys classification, while 4045 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (7, 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 3 and the bottom bar is 4045 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
71
Elongation at Break, % 11
2.3
Fatigue Strength, MPa 48
45
Poisson's Ratio 0.25
0.33
Shear Modulus, GPa 33
27
Shear Strength, MPa 210
69
Tensile Strength: Ultimate (UTS), MPa 280
120
Tensile Strength: Yield (Proof), MPa 210
64

Thermal Properties

Latent Heat of Fusion, J/g 120
540
Maximum Temperature: Mechanical, °C 95
160
Melting Completion (Liquidus), °C 390
600
Melting Onset (Solidus), °C 380
580
Specific Heat Capacity, J/kg-K 410
900
Thermal Conductivity, W/m-K 110
170
Thermal Expansion, µm/m-K 27
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
45
Electrical Conductivity: Equal Weight (Specific), % IACS 38
160

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 6.4
2.6
Embodied Carbon, kg CO2/kg material 3.0
7.8
Embodied Energy, MJ/kg 57
150
Embodied Water, L/kg 380
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 28
2.4
Resilience: Unit (Modulus of Resilience), kJ/m3 260
29
Stiffness to Weight: Axial, points 7.5
15
Stiffness to Weight: Bending, points 23
54
Strength to Weight: Axial, points 12
13
Strength to Weight: Bending, points 15
21
Thermal Diffusivity, mm2/s 43
74
Thermal Shock Resistance, points 8.6
5.7

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
87.4 to 91
Cadmium (Cd), % 0 to 0.0050
0
Copper (Cu), % 0 to 0.25
0 to 0.3
Iron (Fe), % 0 to 0.1
0 to 0.8
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.020 to 0.060
0 to 0.050
Manganese (Mn), % 0
0 to 0.050
Nickel (Ni), % 0 to 0.020
0
Silicon (Si), % 0 to 0.030
9.0 to 11
Tin (Sn), % 0 to 0.0030
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 95.3 to 96.5
0 to 0.1
Residuals, % 0
0 to 0.15