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7020 Aluminum vs. AZ63A Magnesium

7020 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 7020 aluminum and the bottom bar is AZ63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
46
Elongation at Break, % 8.4 to 14
2.2 to 8.0
Fatigue Strength, MPa 110 to 130
76 to 83
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 110 to 230
110 to 160
Tensile Strength: Ultimate (UTS), MPa 190 to 390
190 to 270
Tensile Strength: Yield (Proof), MPa 120 to 310
81 to 120

Thermal Properties

Latent Heat of Fusion, J/g 380
350
Maximum Temperature: Mechanical, °C 210
120
Melting Completion (Liquidus), °C 650
610
Melting Onset (Solidus), °C 610
450
Specific Heat Capacity, J/kg-K 880
980
Thermal Conductivity, W/m-K 150
52 to 65
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
12 to 15
Electrical Conductivity: Equal Weight (Specific), % IACS 120
59 to 74

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.9
1.8
Embodied Carbon, kg CO2/kg material 8.3
22
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
3.7 to 16
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
71 to 160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
66
Strength to Weight: Axial, points 18 to 37
29 to 41
Strength to Weight: Bending, points 25 to 41
40 to 51
Thermal Diffusivity, mm2/s 59
29 to 37
Thermal Shock Resistance, points 8.3 to 17
11 to 16

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
5.3 to 6.7
Chromium (Cr), % 0.1 to 0.35
0
Copper (Cu), % 0 to 0.2
0 to 0.25
Iron (Fe), % 0 to 0.4
0
Magnesium (Mg), % 1.0 to 1.4
88.6 to 92.1
Manganese (Mn), % 0.050 to 0.5
0.15 to 0.35
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.35
0 to 0.3
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 4.0 to 5.0
2.5 to 3.5
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0
0 to 0.3

Comparable Variants