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204.0-T6 Aluminum vs. AZ80A-T6 Magnesium

204.0-T6 aluminum belongs to the aluminum alloys classification, while AZ80A-T6 magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is 204.0-T6 aluminum and the bottom bar is AZ80A-T6 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
46
Elongation at Break, % 5.7
8.5
Fatigue Strength, MPa 63
140
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
18
Tensile Strength: Ultimate (UTS), MPa 230
320
Tensile Strength: Yield (Proof), MPa 180
230

Thermal Properties

Latent Heat of Fusion, J/g 390
350
Maximum Temperature: Mechanical, °C 170
130
Melting Completion (Liquidus), °C 650
600
Melting Onset (Solidus), °C 580
490
Specific Heat Capacity, J/kg-K 880
990
Thermal Conductivity, W/m-K 120
77
Thermal Expansion, µm/m-K 19
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
11
Electrical Conductivity: Equal Weight (Specific), % IACS 100
59

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 3.0
1.7
Embodied Carbon, kg CO2/kg material 8.0
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1150
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
24
Resilience: Unit (Modulus of Resilience), kJ/m3 220
550
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 46
69
Strength to Weight: Axial, points 21
51
Strength to Weight: Bending, points 28
60
Thermal Diffusivity, mm2/s 46
45
Thermal Shock Resistance, points 12
19

Alloy Composition

Aluminum (Al), % 93.4 to 95.5
7.8 to 9.2
Copper (Cu), % 4.2 to 5.0
0 to 0.050
Iron (Fe), % 0 to 0.35
0 to 0.0050
Magnesium (Mg), % 0.15 to 0.35
89 to 91.9
Manganese (Mn), % 0 to 0.1
0.12 to 0.5
Nickel (Ni), % 0 to 0.050
0 to 0.0050
Silicon (Si), % 0 to 0.2
0 to 0.1
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0.15 to 0.3
0
Zinc (Zn), % 0 to 0.1
0.2 to 0.8
Residuals, % 0
0 to 0.3