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238.0 Aluminum vs. ISO-WD21150 Magnesium

238.0 aluminum belongs to the aluminum alloys classification, while ISO-WD21150 magnesium belongs to the magnesium alloys. There are 28 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 238.0 aluminum and the bottom bar is ISO-WD21150 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 76
45
Elongation at Break, % 1.5
5.7 to 11
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 28
17
Tensile Strength: Ultimate (UTS), MPa 210
240 to 290
Tensile Strength: Yield (Proof), MPa 170
120 to 200

Thermal Properties

Latent Heat of Fusion, J/g 430
350
Maximum Temperature: Mechanical, °C 170
110
Melting Completion (Liquidus), °C 600
600
Melting Onset (Solidus), °C 510
550
Specific Heat Capacity, J/kg-K 840
990
Thermal Conductivity, W/m-K 100
100
Thermal Expansion, µm/m-K 21
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
19
Electrical Conductivity: Equal Weight (Specific), % IACS 67
100

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 3.4
1.7
Embodied Carbon, kg CO2/kg material 7.4
23
Embodied Energy, MJ/kg 140
160
Embodied Water, L/kg 1040
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.9
15 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 180
160 to 460
Stiffness to Weight: Axial, points 12
15
Stiffness to Weight: Bending, points 42
70
Strength to Weight: Axial, points 17
40 to 48
Strength to Weight: Bending, points 23
52 to 58
Thermal Diffusivity, mm2/s 37
60
Thermal Shock Resistance, points 9.1
15 to 17

Alloy Composition

Aluminum (Al), % 81.9 to 84.9
2.4 to 3.6
Copper (Cu), % 9.5 to 10.5
0 to 0.050
Iron (Fe), % 1.0 to 1.5
0 to 0.0050
Magnesium (Mg), % 0 to 0.25
94 to 97
Manganese (Mn), % 0
0.15 to 0.4
Nickel (Ni), % 0
0 to 0.0050
Silicon (Si), % 3.6 to 4.4
0 to 0.1
Zinc (Zn), % 1.0 to 1.5
0.5 to 1.5
Residuals, % 0
0 to 0.3