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705.0-T5 Aluminum vs. AZ80A-T5 Magnesium

705.0-T5 aluminum belongs to the aluminum alloys classification, while AZ80A-T5 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 705.0-T5 aluminum and the bottom bar is AZ80A-T5 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
46
Elongation at Break, % 10
3.9
Fatigue Strength, MPa 63
170
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 150
160
Tensile Strength: Ultimate (UTS), MPa 240
340
Tensile Strength: Yield (Proof), MPa 130
230

Thermal Properties

Latent Heat of Fusion, J/g 390
350
Maximum Temperature: Mechanical, °C 180
130
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 610
490
Specific Heat Capacity, J/kg-K 890
990
Thermal Conductivity, W/m-K 140
77
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
11
Electrical Conductivity: Equal Weight (Specific), % IACS 110
59

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.8
1.7
Embodied Carbon, kg CO2/kg material 8.4
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1170
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
12
Resilience: Unit (Modulus of Resilience), kJ/m3 120
600
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 49
69
Strength to Weight: Axial, points 24
55
Strength to Weight: Bending, points 31
63
Thermal Diffusivity, mm2/s 55
45
Thermal Shock Resistance, points 11
20

Alloy Composition

Aluminum (Al), % 92.3 to 98.6
7.8 to 9.2
Chromium (Cr), % 0 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), % 1.4 to 1.8
89 to 91.9
Manganese (Mn), % 0 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), % 0 to 3.3
0.2 to 0.8
Residuals, % 0
0 to 0.3