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4145 Aluminum vs. Z41121 Zinc

4145 aluminum belongs to the aluminum alloys classification, while Z41121 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 4145 aluminum and the bottom bar is Z41121 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
87
Elongation at Break, % 2.2
50
Poisson's Ratio 0.33
0.25
Shear Modulus, GPa 28
35
Tensile Strength: Ultimate (UTS), MPa 120
140
Tensile Strength: Yield (Proof), MPa 68
120

Thermal Properties

Latent Heat of Fusion, J/g 540
110
Maximum Temperature: Mechanical, °C 160
90
Melting Completion (Liquidus), °C 590
410
Melting Onset (Solidus), °C 520
400
Specific Heat Capacity, J/kg-K 880
390
Thermal Conductivity, W/m-K 100
110
Thermal Expansion, µm/m-K 21
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
27
Electrical Conductivity: Equal Weight (Specific), % IACS 84
37

Otherwise Unclassified Properties

Base Metal Price, % relative 10
11
Density, g/cm3 2.8
6.6
Embodied Carbon, kg CO2/kg material 7.6
2.8
Embodied Energy, MJ/kg 140
54
Embodied Water, L/kg 1040
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
68
Resilience: Unit (Modulus of Resilience), kJ/m3 31
79
Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 50
23
Strength to Weight: Axial, points 12
6.1
Strength to Weight: Bending, points 19
9.3
Thermal Diffusivity, mm2/s 42
44
Thermal Shock Resistance, points 5.5
4.6

Alloy Composition


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Aluminum (Al), % 83 to 87.4
0 to 0.010
Cadmium (Cd), % 0
0 to 0.0050
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 3.3 to 4.7
0.080 to 0.49
Iron (Fe), % 0 to 0.8
0 to 0.010
Lead (Pb), % 0
0 to 0.010
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0 to 0.15
0
Silicon (Si), % 9.3 to 10.7
0
Tin (Sn), % 0
0 to 0.0030
Titanium (Ti), % 0
0.050 to 0.18
Zinc (Zn), % 0 to 0.2
99.292 to 99.87
Residuals, % 0 to 0.15
0