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7003 Aluminum vs. Z41321 Zinc

7003 aluminum belongs to the aluminum alloys classification, while Z41321 zinc belongs to the zinc alloys. There are 28 material properties with values for both materials. Properties with values for just one material (2, 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 7003 aluminum and the bottom bar is Z41321 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
87
Elongation at Break, % 11
60
Poisson's Ratio 0.32
0.25
Shear Modulus, GPa 26
35
Tensile Strength: Ultimate (UTS), MPa 350 to 390
190
Tensile Strength: Yield (Proof), MPa 300 to 310
150

Thermal Properties

Latent Heat of Fusion, J/g 380
110
Maximum Temperature: Mechanical, °C 200
90
Melting Completion (Liquidus), °C 630
410
Melting Onset (Solidus), °C 510
400
Specific Heat Capacity, J/kg-K 870
390
Thermal Conductivity, W/m-K 150
110
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
27
Electrical Conductivity: Equal Weight (Specific), % IACS 110
37

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.9
6.6
Embodied Carbon, kg CO2/kg material 8.1
2.8
Embodied Energy, MJ/kg 150
54
Embodied Water, L/kg 1140
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 41
100
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 710
130
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 47
23
Strength to Weight: Axial, points 33 to 37
7.9
Strength to Weight: Bending, points 37 to 40
11
Thermal Diffusivity, mm2/s 59
44
Thermal Shock Resistance, points 15 to 17
5.9

Alloy Composition

Aluminum (Al), % 90.6 to 94.5
0 to 0.010
Cadmium (Cd), % 0
0 to 0.0050
Chromium (Cr), % 0 to 0.2
0
Copper (Cu), % 0 to 0.2
0.5 to 1.0
Iron (Fe), % 0 to 0.35
0 to 0.010
Lead (Pb), % 0
0 to 0.010
Magnesium (Mg), % 0.5 to 1.0
0
Manganese (Mn), % 0 to 0.3
0
Silicon (Si), % 0 to 0.3
0
Tin (Sn), % 0
0 to 0.0030
Titanium (Ti), % 0 to 0.2
0.080 to 0.18
Zinc (Zn), % 5.0 to 6.5
98.8 to 99.42
Zirconium (Zr), % 0.050 to 0.25
0
Residuals, % 0 to 0.15
0