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707.0-T5 Aluminum vs. AZ80A-T5 Magnesium

707.0-T5 aluminum belongs to the aluminum alloys classification, while AZ80A-T5 magnesium belongs to the magnesium alloys. There are 29 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 707.0-T5 aluminum and the bottom bar is AZ80A-T5 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
46
Elongation at Break, % 3.4
3.9
Fatigue Strength, MPa 75
170
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Tensile Strength: Ultimate (UTS), MPa 290
340
Tensile Strength: Yield (Proof), MPa 170
230

Thermal Properties

Latent Heat of Fusion, J/g 380
350
Maximum Temperature: Mechanical, °C 180
130
Melting Completion (Liquidus), °C 630
600
Melting Onset (Solidus), °C 600
490
Specific Heat Capacity, J/kg-K 880
990
Thermal Conductivity, W/m-K 150
77
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
11
Electrical Conductivity: Equal Weight (Specific), % IACS 110
59

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.9
1.7
Embodied Carbon, kg CO2/kg material 8.3
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1140
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.5
12
Resilience: Unit (Modulus of Resilience), kJ/m3 210
600
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 47
69
Strength to Weight: Axial, points 28
55
Strength to Weight: Bending, points 34
63
Thermal Diffusivity, mm2/s 58
45
Thermal Shock Resistance, points 13
20

Alloy Composition

Aluminum (Al), % 90.5 to 93.6
7.8 to 9.2
Chromium (Cr), % 0.2 to 0.4
0
Copper (Cu), % 0 to 0.2
0 to 0.050
Iron (Fe), % 0 to 0.8
0 to 0.0050
Magnesium (Mg), % 1.8 to 2.4
89 to 91.9
Manganese (Mn), % 0.4 to 0.6
0.12 to 0.5
Nickel (Ni), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.2
0 to 0.1
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 4.0 to 4.5
0.2 to 0.8
Residuals, % 0
0 to 0.3