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7108 Aluminum vs. EN-MC21210 Magnesium

7108 aluminum belongs to the aluminum alloys classification, while EN-MC21210 magnesium belongs to the magnesium alloys. There are 30 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 7108 aluminum and the bottom bar is EN-MC21210 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
44
Elongation at Break, % 11
14
Fatigue Strength, MPa 120
70
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 210
110
Tensile Strength: Ultimate (UTS), MPa 350
190
Tensile Strength: Yield (Proof), MPa 290
90

Thermal Properties

Latent Heat of Fusion, J/g 380
350
Maximum Temperature: Mechanical, °C 210
100
Melting Completion (Liquidus), °C 630
600
Melting Onset (Solidus), °C 530
570
Specific Heat Capacity, J/kg-K 880
1000
Thermal Conductivity, W/m-K 150
120
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
24
Electrical Conductivity: Equal Weight (Specific), % IACS 120
130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.9
1.6
Embodied Carbon, kg CO2/kg material 8.3
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1150
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38
22
Resilience: Unit (Modulus of Resilience), kJ/m3 620
92
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 47
72
Strength to Weight: Axial, points 34
32
Strength to Weight: Bending, points 38
44
Thermal Diffusivity, mm2/s 59
76
Thermal Shock Resistance, points 16
11

Alloy Composition

Aluminum (Al), % 92.4 to 94.7
1.6 to 2.6
Copper (Cu), % 0 to 0.050
0 to 0.010
Iron (Fe), % 0 to 0.1
0 to 0.0050
Magnesium (Mg), % 0.7 to 1.4
96.3 to 98.3
Manganese (Mn), % 0 to 0.050
0.1 to 0.7
Nickel (Ni), % 0
0 to 0.0020
Silicon (Si), % 0 to 0.1
0 to 0.1
Titanium (Ti), % 0 to 0.050
0
Zinc (Zn), % 4.5 to 5.5
0 to 0.2
Zirconium (Zr), % 0.12 to 0.25
0
Residuals, % 0
0 to 0.010