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5657 Aluminum vs. ISO-WD21150 Magnesium

5657 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 (2, in this case) are not shown.

For each property being compared, the top bar is 5657 aluminum and the bottom bar is ISO-WD21150 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
45
Elongation at Break, % 6.6 to 15
5.7 to 11
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 92 to 110
150 to 170
Tensile Strength: Ultimate (UTS), MPa 150 to 200
240 to 290
Tensile Strength: Yield (Proof), MPa 140 to 170
120 to 200

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 180
110
Melting Completion (Liquidus), °C 660
600
Melting Onset (Solidus), °C 640
550
Specific Heat Capacity, J/kg-K 900
990
Thermal Conductivity, W/m-K 210
100
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 54
19
Electrical Conductivity: Equal Weight (Specific), % IACS 180
100

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.7
Embodied Carbon, kg CO2/kg material 8.4
23
Embodied Energy, MJ/kg 160
160
Embodied Water, L/kg 1200
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.7 to 27
15 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 200
160 to 460
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
70
Strength to Weight: Axial, points 15 to 20
40 to 48
Strength to Weight: Bending, points 23 to 28
52 to 58
Thermal Diffusivity, mm2/s 84
60
Thermal Shock Resistance, points 6.7 to 8.6
15 to 17

Alloy Composition

Aluminum (Al), % 98.5 to 99.4
2.4 to 3.6
Copper (Cu), % 0 to 0.1
0 to 0.050
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.1
0 to 0.0050
Magnesium (Mg), % 0.6 to 1.0
94 to 97
Manganese (Mn), % 0 to 0.030
0.15 to 0.4
Nickel (Ni), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.080
0 to 0.1
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.050
0.5 to 1.5
Residuals, % 0
0 to 0.3