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7116 Aluminum vs. ISO-WD21150 Magnesium

7116 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 7116 aluminum and the bottom bar is ISO-WD21150 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
45
Elongation at Break, % 7.8
5.7 to 11
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 220
150 to 170
Tensile Strength: Ultimate (UTS), MPa 370
240 to 290
Tensile Strength: Yield (Proof), MPa 330
120 to 200

Thermal Properties

Latent Heat of Fusion, J/g 380
350
Maximum Temperature: Mechanical, °C 170
110
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 520
550
Specific Heat Capacity, J/kg-K 880
990
Thermal Conductivity, W/m-K 150
100
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46
19
Electrical Conductivity: Equal Weight (Specific), % IACS 140
100

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.9
1.7
Embodied Carbon, kg CO2/kg material 8.2
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1150
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 28
15 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 790
160 to 460
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 47
70
Strength to Weight: Axial, points 35
40 to 48
Strength to Weight: Bending, points 39
52 to 58
Thermal Diffusivity, mm2/s 58
60
Thermal Shock Resistance, points 16
15 to 17

Alloy Composition

Aluminum (Al), % 91.5 to 94.5
2.4 to 3.6
Copper (Cu), % 0.5 to 1.1
0 to 0.050
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.3
0 to 0.0050
Magnesium (Mg), % 0.8 to 1.4
94 to 97
Manganese (Mn), % 0 to 0.050
0.15 to 0.4
Nickel (Ni), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.15
0 to 0.1
Titanium (Ti), % 0 to 0.050
0
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 4.2 to 5.2
0.5 to 1.5
Residuals, % 0
0 to 0.3