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357.0 Aluminum vs. Z21721 Zinc

357.0 aluminum belongs to the aluminum alloys classification, while Z21721 zinc belongs to the zinc alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 357.0 aluminum and the bottom bar is Z21721 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
87
Elongation at Break, % 3.4
40
Poisson's Ratio 0.33
0.25
Shear Modulus, GPa 26
35
Tensile Strength: Ultimate (UTS), MPa 350
150
Tensile Strength: Yield (Proof), MPa 300
120

Thermal Properties

Latent Heat of Fusion, J/g 500
110
Maximum Temperature: Mechanical, °C 170
90
Melting Completion (Liquidus), °C 620
410
Melting Onset (Solidus), °C 560
390
Specific Heat Capacity, J/kg-K 910
390
Thermal Conductivity, W/m-K 150
110
Thermal Expansion, µm/m-K 21
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
27
Electrical Conductivity: Equal Weight (Specific), % IACS 140
37

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 2.6
6.6
Embodied Carbon, kg CO2/kg material 8.0
2.8
Embodied Energy, MJ/kg 150
53
Embodied Water, L/kg 1110
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
57
Resilience: Unit (Modulus of Resilience), kJ/m3 620
88
Stiffness to Weight: Axial, points 15
7.3
Stiffness to Weight: Bending, points 53
22
Strength to Weight: Axial, points 38
6.4
Strength to Weight: Bending, points 43
9.6
Thermal Diffusivity, mm2/s 64
44
Thermal Shock Resistance, points 17
4.8

Alloy Composition


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Aluminum (Al), % 91.3 to 93.1
0 to 0.0020
Cadmium (Cd), % 0
0 to 0.070
Copper (Cu), % 0 to 0.050
0 to 0.0050
Iron (Fe), % 0 to 0.15
0 to 0.010
Lead (Pb), % 0
0 to 1.0
Magnesium (Mg), % 0.45 to 0.6
0
Manganese (Mn), % 0 to 0.030
0
Silicon (Si), % 6.5 to 7.5
0
Titanium (Ti), % 0 to 0.2
0 to 0.020
Zinc (Zn), % 0 to 0.050
98.9 to 100
Residuals, % 0 to 0.15
0