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4145 Aluminum vs. AZ63A Magnesium

4145 aluminum belongs to the aluminum alloys classification, while AZ63A magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 4145 aluminum and the bottom bar is AZ63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
46
Elongation at Break, % 2.2
2.2 to 8.0
Fatigue Strength, MPa 48
76 to 83
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 28
18
Shear Strength, MPa 69
110 to 160
Tensile Strength: Ultimate (UTS), MPa 120
190 to 270
Tensile Strength: Yield (Proof), MPa 68
81 to 120

Thermal Properties

Latent Heat of Fusion, J/g 540
350
Maximum Temperature: Mechanical, °C 160
120
Melting Completion (Liquidus), °C 590
610
Melting Onset (Solidus), °C 520
450
Specific Heat Capacity, J/kg-K 880
980
Thermal Conductivity, W/m-K 100
52 to 65
Thermal Expansion, µm/m-K 21
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
12 to 15
Electrical Conductivity: Equal Weight (Specific), % IACS 84
59 to 74

Otherwise Unclassified Properties

Base Metal Price, % relative 10
12
Density, g/cm3 2.8
1.8
Embodied Carbon, kg CO2/kg material 7.6
22
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 1040
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
3.7 to 16
Resilience: Unit (Modulus of Resilience), kJ/m3 31
71 to 160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
66
Strength to Weight: Axial, points 12
29 to 41
Strength to Weight: Bending, points 19
40 to 51
Thermal Diffusivity, mm2/s 42
29 to 37
Thermal Shock Resistance, points 5.5
11 to 16

Alloy Composition

Aluminum (Al), % 83 to 87.4
5.3 to 6.7
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 3.3 to 4.7
0 to 0.25
Iron (Fe), % 0 to 0.8
0
Magnesium (Mg), % 0 to 0.15
88.6 to 92.1
Manganese (Mn), % 0 to 0.15
0.15 to 0.35
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 9.3 to 10.7
0 to 0.3
Zinc (Zn), % 0 to 0.2
2.5 to 3.5
Residuals, % 0
0 to 0.3