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238.0 Aluminum vs. Z21721 Zinc

238.0 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 (1, in this case) are not shown.

For each property being compared, the top bar is 238.0 aluminum and the bottom bar is Z21721 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 76
87
Elongation at Break, % 1.5
40
Poisson's Ratio 0.33
0.25
Shear Modulus, GPa 28
35
Tensile Strength: Ultimate (UTS), MPa 210
150
Tensile Strength: Yield (Proof), MPa 170
120

Thermal Properties

Latent Heat of Fusion, J/g 430
110
Maximum Temperature: Mechanical, °C 170
90
Melting Completion (Liquidus), °C 600
410
Melting Onset (Solidus), °C 510
390
Specific Heat Capacity, J/kg-K 840
390
Thermal Conductivity, W/m-K 100
110
Thermal Expansion, µm/m-K 21
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
27
Electrical Conductivity: Equal Weight (Specific), % IACS 67
37

Otherwise Unclassified Properties

Base Metal Price, % relative 12
11
Density, g/cm3 3.4
6.6
Embodied Carbon, kg CO2/kg material 7.4
2.8
Embodied Energy, MJ/kg 140
53
Embodied Water, L/kg 1040
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.9
57
Resilience: Unit (Modulus of Resilience), kJ/m3 180
88
Stiffness to Weight: Axial, points 12
7.3
Stiffness to Weight: Bending, points 42
22
Strength to Weight: Axial, points 17
6.4
Strength to Weight: Bending, points 23
9.6
Thermal Diffusivity, mm2/s 37
44
Thermal Shock Resistance, points 9.1
4.8

Alloy Composition

Aluminum (Al), % 81.9 to 84.9
0 to 0.0020
Cadmium (Cd), % 0
0 to 0.070
Copper (Cu), % 9.5 to 10.5
0 to 0.0050
Iron (Fe), % 1.0 to 1.5
0 to 0.010
Lead (Pb), % 0
0 to 1.0
Magnesium (Mg), % 0 to 0.25
0
Silicon (Si), % 3.6 to 4.4
0
Titanium (Ti), % 0
0 to 0.020
Zinc (Zn), % 1.0 to 1.5
98.9 to 100