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5082 Aluminum vs. ISO-WD21150 Magnesium

5082 aluminum belongs to the aluminum alloys classification, while ISO-WD21150 magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 5082 aluminum and the bottom bar is ISO-WD21150 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
45
Elongation at Break, % 1.1
5.7 to 11
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
17
Shear Strength, MPa 210 to 230
150 to 170
Tensile Strength: Ultimate (UTS), MPa 380 to 400
240 to 290
Tensile Strength: Yield (Proof), MPa 300 to 340
120 to 200

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 180
110
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 560
550
Specific Heat Capacity, J/kg-K 910
990
Thermal Conductivity, W/m-K 130
100
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
19
Electrical Conductivity: Equal Weight (Specific), % IACS 110
100

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.7
Embodied Carbon, kg CO2/kg material 8.9
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 4.3
15 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 870
160 to 460
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 51
70
Strength to Weight: Axial, points 39 to 41
40 to 48
Strength to Weight: Bending, points 43 to 45
52 to 58
Thermal Diffusivity, mm2/s 54
60
Thermal Shock Resistance, points 17 to 18
15 to 17

Alloy Composition

Aluminum (Al), % 93.5 to 96
2.4 to 3.6
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
0 to 0.050
Iron (Fe), % 0 to 0.35
0 to 0.0050
Magnesium (Mg), % 4.0 to 5.0
94 to 97
Manganese (Mn), % 0 to 0.15
0.15 to 0.4
Nickel (Ni), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.2
0 to 0.1
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
0.5 to 1.5
Residuals, % 0
0 to 0.3