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Zamak 7 vs. 324.0 Aluminum

Zamak 7 belongs to the zinc alloys classification, while 324.0 aluminum belongs to the aluminum alloys. There are 29 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 7 and the bottom bar is 324.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
71
Elongation at Break, % 13
3.0 to 4.0
Fatigue Strength, MPa 47
77 to 89
Poisson's Ratio 0.25
0.33
Shear Modulus, GPa 33
27
Tensile Strength: Ultimate (UTS), MPa 280
210 to 310
Tensile Strength: Yield (Proof), MPa 250
110 to 270

Thermal Properties

Latent Heat of Fusion, J/g 120
500
Maximum Temperature: Mechanical, °C 95
170
Melting Completion (Liquidus), °C 390
610
Melting Onset (Solidus), °C 380
550
Specific Heat Capacity, J/kg-K 410
900
Thermal Conductivity, W/m-K 110
150
Thermal Expansion, µm/m-K 27
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
34
Electrical Conductivity: Equal Weight (Specific), % IACS 38
120

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 6.4
2.7
Embodied Carbon, kg CO2/kg material 3.0
7.9
Embodied Energy, MJ/kg 57
150
Embodied Water, L/kg 380
1090

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
6.8 to 8.9
Resilience: Unit (Modulus of Resilience), kJ/m3 370
85 to 510
Stiffness to Weight: Axial, points 7.5
15
Stiffness to Weight: Bending, points 23
52
Strength to Weight: Axial, points 12
22 to 32
Strength to Weight: Bending, points 15
29 to 38
Thermal Diffusivity, mm2/s 43
62
Thermal Shock Resistance, points 8.6
9.7 to 14

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
87.3 to 92.2
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.25
0.4 to 0.6
Iron (Fe), % 0 to 0.075
0 to 1.2
Lead (Pb), % 0 to 0.0030
0
Magnesium (Mg), % 0.0050 to 0.020
0.4 to 0.7
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0.0050 to 0.020
0 to 0.3
Silicon (Si), % 0
7.0 to 8.0
Tin (Sn), % 0 to 0.0010
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 95.3 to 96.5
0 to 1.0
Residuals, % 0
0 to 0.2